HUZHOU SIFENG BIOCHEM CO., LTD

A supplier's certificate of analysis can confirm what was tested in a Policosanol raw-material lot. It cannot, by itself, confirm the milligrams of Policosanol in each serving of a tablet, softgel or oil blend. That second number depends on a chain of decisions made after the ingredient arrives: the assay definition, weighed input, processing, representative sampling and a finished-product test suited to the actual formulation. For ingredient buyers, the useful question is where those records meet. The practical answer: qualify the ingredient and the finished product as two linked but separate measurements. A passing raw-material COA is the starting document; a validated per-serving result is the evidence for the finished product's declared amount. Why the gap deserves attention A 2025 study in Food Production, Processing and Nutrition measured five commercial Policosanol supplements sourced in Thailand and the United States. Only two contained the amount expected from their labels; the other three had lower measured amounts. The products were purchased in 2022, and the study did not test Sifeng Bio's SF-001 Policosanol. Nor did it establish one common cause for the differences. Its value here is narrower and more useful: it shows why a label claim should be checked in the final matrix rather than inferred from an ingredient specification. Policosanol is a mixture of long-chain primary alcohols. The defined set and measurement basis behind a reported “total Policosanol” figure matter; an individual alcohol such as octacosanol is a different analytical question. We explored that distinction in an earlier Policosanol–Octacosanol article. Here, the focus moves downstream to the amount that can actually be substantiated per serving. Five checkpoints between a COA and a label A workable qualification record follows the same material through five stages. Each stage answers a different question; none can substitute for the next one. CheckpointEvidence to retainDecision it supports 1. Incoming lotIdentity, source, lot number, defined assay, method and relevant contaminant limits.Can this specific ingredient lot be released against the agreed specification? 2. Formula inputTarget mg per serving, assay-adjusted input and documented weighing.Does the theoretical material balance match the proposed label amount? 3. ProcessingMixing sequence, hold conditions, transfer records and process yield.Did the process change distribution or recoverable amount? 4. Finished-product testRepresentative samples, matrix extraction, recovery and measured concentration.What amount is measured in the actual product and serving size? 5. Shelf-life reviewProduct-specific stability plan, packaging and time-point results.Does the declared amount remain supported over the proposed shelf life? One calculation, with a clear boundary Illustrative input calculation: if a hypothetical ingredient has a validated 95% w/w assay for the same defined Policosanol sum, a theoretical 10 mg of that sum requires 10 ÷ 0.95 ≈ 10.53 mg of ingredient per serving before manufacturing. This is a mass-balance example, not an SF-001 lot specification or an overage recommendation. It does not account for actual process loss, background Policosanol in other ingredients, sampling variation or analytical recovery. The finished product still needs its own measurement. A discrepancy after production can have several explanations: the input calculation or weighing, uneven distribution, a real processing change, unrepresentative sampling, or incomplete extraction during the analytical test. These are distinct hypotheses. Investigate them in sequence before declaring an ingredient lot at fault or raising the formula input. What the 2025 stability work does—and does not—show The same researchers studied a model of Policosanol-enriched rice bran oil, not every commercial dosage form. For the six-month storage arm, they used nitrogen-flushed amber glass bottles at an ambient 27 ± 5 °C. Under those conditions, the measured Policosanol level in the control oil and one enriched oil did not differ significantly from the initial level after six months, although intermediate readings varied. Heat experiments were separate. These details matter more than the shorthand “Policosanol is stable.” Use the paper to frame a test, not to assign a shelf life. Different oil systems, softgel shells, headspace, oxygen exposure, packaging, analytical methods and storage conditions call for product-specific work. The paper does not report the storage performance of SF-001 Policosanol or validate a buyer's finished formulation. A useful handoff for SF-001 Policosanol buyers HUZHOU SIFENG BIOCHEM CO., LTD lists SF-001 Policosanol (CAS 142583-61-7) on its English website. Before trial production, request a current written specification and a representative batch COA, then agree with the finished-product manufacturer on the analyte definition and method. The company's public pages currently display different grade ranges for SF-001; the current offer and lot documents should govern any commercial specification. Send a specification brief that can be answered State your intended dosage form and market, target Policosanol definition and per-serving amount, desired raw-material source, planned batch size, packaging conditions and the documents required for your qualification. Ask for the assay method and relevant homolog profile, then use pilot lots to agree on a finished-product test and acceptance criteria. For current SF-001 documentation and sample discussions: Policosanol product page · sales@sifengbio.com · +86-572-2576818 · Contact Sifeng Bio. Frequently asked questions What does a Policosanol raw-material COA establish for a finished-product label?A Policosanol COA reports results for a specified raw-material lot under a stated method. The finished product requires separate evidence for its measured Policosanol amount per serving in the actual matrix and, where relevant, over its shelf life. How should Policosanol input per serving be calculated from an ingredient assay?If the assay is a validated mass fraction for the same defined Policosanol sum used in the intended claim, divide the target mass by that fraction for a theoretical starting input. Confirm the basis and test the finished product; the calculation alone does not establish actual delivery. Why might measured Policosanol per serving differ from the Policosanol input calculation?Possible reasons include weighing, mixing and sampling variation, processing changes or incomplete analytical recovery from the final matrix. These possibilities require different checks. A lower measured result does not, by itself, identify the cause. Did the 2025 Policosanol supplement study test Sifeng Bio SF-001 Policosanol?No. The published study analysed selected commercial supplements and a rice-bran-oil model. It provides a reason to verify finished-product content, but its findings should not be attributed to Sifeng Bio SF-001 Policosanol. Can six-month rice-bran-oil results establish the shelf life of a Policosanol softgel?No. The cited six-month work used a specific oil model and nitrogen-flushed amber bottles under stated conditions. A Policosanol softgel has its own fill, shell, packaging and storage variables; its shelf life needs product-specific evidence. Which documents should a buyer request for SF-001 Policosanol qualification?Request the current SF-001 Policosanol specification and representative lot COA, the definition and method for the reported assay, origin and relevant homolog or impurity information, sample availability and documentation needed in the intended market. Confirm the actual offered grade because the public site lists differing ranges. How should a laboratory test Policosanol in a complex finished-product matrix?The laboratory should define the alcohols being summed, demonstrate identity and calibration, evaluate extraction recovery and repeatability in that specific matrix, and report the result in units that can be converted to mg per serving. The acceptance criteria should be agreed before routine release. Sources and verification Wongwaiwech et al., 2025, Food Production, Processing and Nutrition — commercial product measurements and the enriched-rice-bran-oil stability model; note its sample and storage conditions. Irmak et al., 2006, Food Chemistry — source-dependent Policosanol compositions. Sifeng Bio English homepage and SF-001 Policosanol product page — product identity and public catalogue information; confirm current grade numbers against the direct offer. Author statement: Prepared by HUZHOU SIFENG BIOCHEM CO., LTD for ingredient-industry communication. The cited commercial-product findings and oil stability data are independent research, not tests of Sifeng Bio materials or customer formulations. The calculation is a hypothetical example. This article makes no treatment claim and does not determine regulatory status or finished-product shelf life; validate the current lot specification and local requirements before use. Topics: #Policosanol   #IngredientQualification   #CertificateOfAnalysis   #FinishedProductTesting   #LabelClaim   #NutraceuticalFormulation   #BatchConsistency   #B2BSourcing {"@context":"https://schema.org","@graph":[ {"@type":"Organization","@id":"https://www.sifengbio.com/#organization","name":"HUZHOU SIFENG BIOCHEM CO., LTD","url":"https://www.sifengbio.com/","email":"sales@sifengbio.com","telephone":"+86-572-2576818"}, {"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.sifengbio.com/"},{"@type":"ListItem","position":2,"name":"Industry News","item":"https://www.sifengbio.com/news_en/typeid/7.html"},{"@type":"ListItem","position":3,"name":"Policosanol on the COA vs Policosanol per Serving: Where Does the Number Change?","item":"https://www.sifengbio.com/news_detail_en/id/19.html"}]}, {"@type":"FAQPage","mainEntity":[ {"@type":"Question","name":"What does a Policosanol raw-material COA establish for a finished-product label?","acceptedAnswer":{"@type":"Answer","text":"A Policosanol COA reports results for a specified raw-material lot under a stated method. A finished product requires separate evidence for measured Policosanol per serving in its actual matrix."}}, {"@type":"Question","name":"How should Policosanol input per serving be calculated from an ingredient assay?","acceptedAnswer":{"@type":"Answer","text":"When the assay is a validated mass fraction for the same defined Policosanol sum, divide the target mass by that fraction for a theoretical input. Verify the result in the finished product."}}, {"@type":"Question","name":"Why might measured Policosanol per serving differ from the Policosanol input calculation?","acceptedAnswer":{"@type":"Answer","text":"Possible reasons include weighing, mixing and sampling variation, processing changes or incomplete analytical recovery in the finished matrix. Investigate each separately."}}, {"@type":"Question","name":"Did the 2025 Policosanol supplement study test Sifeng Bio SF-001 Policosanol?","acceptedAnswer":{"@type":"Answer","text":"No. The study tested selected commercial supplements and a rice-bran-oil model, not Sifeng Bio SF-001 Policosanol."}}, {"@type":"Question","name":"Can six-month rice-bran-oil results establish the shelf life of a Policosanol softgel?","acceptedAnswer":{"@type":"Answer","text":"No. The study used a specific oil model and nitrogen-flushed amber bottles. A Policosanol softgel needs product-specific stability evidence."}}, {"@type":"Question","name":"Which documents should a buyer request for SF-001 Policosanol qualification?","acceptedAnswer":{"@type":"Answer","text":"Request the current SF-001 Policosanol specification, representative lot COA, assay definition and method, origin and relevant composition information, and destination-market documents. Confirm the offered grade."}}, {"@type":"Question","name":"How should a laboratory test Policosanol in a complex finished-product matrix?","acceptedAnswer":{"@type":"Answer","text":"Define the alcohol sum, verify identity and calibration, assess extraction recovery and repeatability in the specific matrix, and report a result convertible to mg per serving."}} ]}, {"@type":"BlogPosting","headline":"Policosanol on the COA vs Policosanol per Serving: Where Does the Number Change?","url":"https://www.sifengbio.com/news_detail_en/id/19.html","mainEntityOfPage":"https://www.sifengbio.com/news_detail_en/id/19.html","datePublished":"2026-11-03","dateModified":"2026-11-03","description":"Follow Policosanol from raw-material COA to finished-product label with assay-adjusted input, matrix recovery, stability boundaries and buyer qualification questions.","image":["https://www.sifengbio.com/Public/userfiles/images/policosanol-coa-to-serving-1200x300.png","https://www.sifengbio.com/Public/userfiles/images/policosanol-qualification-1200x300.png"],"inLanguage":"en","author":{"@id":"https://www.sifengbio.com/#organization"},"publisher":{"@id":"https://www.sifengbio.com/#organization"},"keywords":["Policosanol","finished-product testing","ingredient COA","label claim","B2B sourcing"]} ]}

A 95% Policosanol offer and a 90% Octacosanol offer may look easy to rank. They are not the same measurement. Policosanol names a mixture of long-chain primary alcohols; Octacosanol is a specific C28 alcohol. Before comparing two percentages, an ingredient buyer needs to know what was measured, how it was measured, and what counted as 100%. Editorial illustration. Raw-material imagery does not identify the feedstock of a particular Sifeng Bio batch. First, name the substance behind the number SF-001 Policosanol Policosanol is a family of long-chain primary fatty alcohols, typically discussed through the combined assay and the relative profile of its members. The Sifeng Bio homepage lists 95%, 98% and 99% grades for SF-001. These catalogue figures do not disclose the individual C28 share or precise assay basis; confirm both against the current offer and batch COA. SF-002 Octacosanol Octacosanol (CAS 557-61-9) is the individual 28-carbon primary alcohol, also called 1-octacosanol. Sifeng Bio lists SF-002 grades of 10%, 12%, 40%, 50%, 60% and 90%; its product page separately describes a GC purity range and a total-alcohol indicator. Those lines answer different analytical questions. A percentage is incomplete until its denominator is clear The key distinction is between how much of the defined alcohol mixture is in the material and how much of the material is the C28 molecule. A third figure, the share of a C28 peak among identified alcohol peaks, describes the mixture's profile. These values can differ without any laboratory error. Reported line Question it may answer Clarify before comparing offers Total defined alcohols How much of the sample is the specified alcohol set? Included chain lengths, mass basis, calibration and exclusions. Octacosanol assay How much of the sample is C28 alcohol? Identity standard, GC method and whether the result is mass% or area%. Homolog distribution How is C28 distributed relative to C24, C26, C30 and other measured alcohols? Which peaks form the 100% reference and how unknowns are handled. For example, a label saying “90% Octacosanol” should not be silently read as “90% total alcohols,” or as “90% of the Policosanol mixture.” Likewise, a “95% Policosanol” listing does not disclose its C28 share. The test report must define the analyte and basis. A GC peak-area percentage also should not automatically be treated as weight percentage without a suitable quantitative method and calibration. Editorial illustration of analytical testing, not a photograph of Sifeng Bio's facility or its actual COA. Read the COA in a useful order Match the product and batch. Check SF-001 Policosanol or SF-002 Octacosanol, lot number, sampling date and the corresponding specification. Identify each assay line. Distinguish total defined alcohols, C28 content and the distribution of individual alcohols. Read the method note. Ask for GC conditions, reference standards, calculation basis and whether each number is area% or mass%. Review non-assay parameters. Residual solvents, moisture, heavy metals, microbiological limits and packaging can matter for the intended use. Compare more than one lot. A single COA describes one sample; repeatability across lots is a separate procurement question. Published analytical work on rice-bran-wax Policosanol used GC–MS for constituent identification and GC–FID with an internal standard for quantification. That is a useful illustration of why a chromatogram, calibration approach and defined sum can add meaning that a headline percentage lacks. It does not identify the method Sifeng Bio uses for any particular lot. Choose the grade for the application, not the largest number Ingredient development Define the target alcohol profile before screening Policosanol lots. A stated total alone does not describe the full mixture. Formula evaluation When the target is C28, compare Octacosanol assay with particle properties, processing conditions and performance in the actual formulation. Commercial supply Align a written specification, sampling plan, analytical method and destination-market documentation before moving from samples to recurring orders. No ingredient purity percentage, by itself, proves a finished product's efficacy, safety, regulatory status or suitability for a health claim. Those questions require separate evidence and market-specific review. Frequently asked questions What does 95% Policosanol mean for SF-001 Policosanol? The Sifeng Bio homepage lists a 95% SF-001 Policosanol grade, but that label alone does not define the precise alcohol set, assay basis or C28 share. Request the current SF-001 Policosanol specification and batch COA. Does 90% Octacosanol mean 90% total alcohols in SF-002 Octacosanol? No such equivalence should be assumed. The SF-002 Octacosanol product page presents Octacosanol purity and total alcohol content as separate indicators; confirm the method and calculation basis on the relevant SF-002 Octacosanol COA. Can 95% Policosanol be directly compared with 90% Octacosanol? A 95% Policosanol listing and a 90% Octacosanol listing may describe different analytes. Compare Policosanol total-alcohol definitions and homolog profiles with Octacosanol's C28 assay only after both specifications define the percentage basis. How are Policosanol and Octacosanol related in a GC profile? Octacosanol is a C28 primary alcohol that may appear as one constituent in a Policosanol mixture. A GC profile can separate Octacosanol from other measured Policosanol alcohols, subject to the validated method and identification standards. Which documents should a buyer request for SF-001 Policosanol and SF-002 Octacosanol? For SF-001 Policosanol and SF-002 Octacosanol, request the current specification, a batch COA, assay method description, identity or homolog data, relevant contaminant limits and documentation needed for the destination market. Does higher Octacosanol purity guarantee a better result than Policosanol? Higher Octacosanol assay does not establish that Octacosanol is better than Policosanol for every formulation. The desired molecule or mixture, delivery system, quality requirements and actual application tests should determine the choice. Compare a defined specification, then request a sample. Tell HUZHOU SIFENG BIOCHEM CO., LTD which grade, assay definition, intended application, destination market and expected volume you are evaluating. Ask for the current SF-001 Policosanol or SF-002 Octacosanol documentation before making a purchasing decision. Email: sales@sifengbio.com   |   Tel: +86-572-2576818   |   Website: www.sifengbio.com Sources and verification Sifeng Bio English homepage: SF-001 and SF-002 catalogue grades Sifeng Bio: SF-001 Policosanol product page; SF-002 Octacosanol product page Wang et al., Journal of Agricultural and Food Chemistry (2007): extraction methods and chromatographic fingerprint of rice-bran-wax Policosanol NIH PubChem: 1-Octacosanol identity and formula Author statement: Prepared by HUZHOU SIFENG BIOCHEM CO., LTD for ingredient-industry communication. Company-grade references come from its public website; analytical context comes from the cited research and chemical database. The article is educational and does not claim that either ingredient treats disease or that a listed purity figure guarantees a finished-product result. Confirm current specifications, batch documents and local requirements before use. Topics: #Policosanol   #Octacosanol   #FattyAlcohols   #IngredientQuality   #GCFID   #CertificateOfAnalysis   #NutraceuticalIngredients   #B2BSourcing {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://www.sifengbio.com/#organization","name":"HUZHOU SIFENG BIOCHEM CO., LTD","url":"https://www.sifengbio.com/","email":"sales@sifengbio.com","telephone":"+86-572-2576818"},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.sifengbio.com/"},{"@type":"ListItem","position":2,"name":"95% Policosanol vs 90% Octacosanol: What Does the Percentage Actually Measure?"}]},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What does 95% Policosanol mean for SF-001 Policosanol?","acceptedAnswer":{"@type":"Answer","text":"The Sifeng Bio homepage lists a 95% SF-001 Policosanol grade, but that label alone does not define the precise alcohol set, assay basis or C28 share. Request the current SF-001 Policosanol specification and batch COA."}},{"@type":"Question","name":"Does 90% Octacosanol mean 90% total alcohols in SF-002 Octacosanol?","acceptedAnswer":{"@type":"Answer","text":"No such equivalence should be assumed. The SF-002 Octacosanol product page presents Octacosanol purity and total alcohol content as separate indicators; confirm the method and calculation basis on the relevant SF-002 Octacosanol COA."}},{"@type":"Question","name":"Can 95% Policosanol be directly compared with 90% Octacosanol?","acceptedAnswer":{"@type":"Answer","text":"A 95% Policosanol listing and a 90% Octacosanol listing may describe different analytes. Compare Policosanol total-alcohol definitions and homolog profiles with Octacosanol's C28 assay only after both specifications define the percentage basis."}},{"@type":"Question","name":"How are Policosanol and Octacosanol related in a GC profile?","acceptedAnswer":{"@type":"Answer","text":"Octacosanol is a C28 primary alcohol that may appear as one constituent in a Policosanol mixture. A GC profile can separate Octacosanol from other measured Policosanol alcohols, subject to the validated method and identification standards."}},{"@type":"Question","name":"Which documents should a buyer request for SF-001 Policosanol and SF-002 Octacosanol?","acceptedAnswer":{"@type":"Answer","text":"For SF-001 Policosanol and SF-002 Octacosanol, request the current specification, a batch COA, assay method description, identity or homolog data, relevant contaminant limits and documentation needed for the destination market."}},{"@type":"Question","name":"Does higher Octacosanol purity guarantee a better result than Policosanol?","acceptedAnswer":{"@type":"Answer","text":"Higher Octacosanol assay does not establish that Octacosanol is better than Policosanol for every formulation. The desired molecule or mixture, delivery system, quality requirements and actual application tests should determine the choice."}}]},{"@type":"NewsArticle","headline":"95% Policosanol vs 90% Octacosanol: What Does the Percentage Actually Measure?","description":"Compare Policosanol and Octacosanol grades through assay definitions, C28 content, GC profiles and COA questions for ingredient sourcing.","image":["https://www.sifengbio.com/Public/userfiles/images/policosanol-octacosanol-grades.jpg","https://www.sifengbio.com/Public/userfiles/images/fatty-alcohol-gc-assay.jpg"],"datePublished":"2026-10-23","dateModified":"2026-10-23","inLanguage":"en","author":{"@id":"https://www.sifengbio.com/#organization"},"publisher":{"@id":"https://www.sifengbio.com/#organization"},"keywords":["Policosanol","Octacosanol","Fatty alcohols","GC-FID","COA","Ingredient sourcing"]}]}