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Frequently Asked Questions
Everything B2B research buyers ask about samples, MOQ, cold-chain 2–8℃ shipping, CDEK delivery, COA / HPLC documents, research-grade peptides and botanical extracts wholesale.
❄️ 2–8℃ Cold-Chain
🚚 CDEK · Post · DHL · FedEx
✅ Full COA / HPLC
⚠️ Research-Use Only
🇷🇺 CDEK & Post Service
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About Our Products
Company background, product grades and manufacturing qualifications.
Q1 What goods does Nutrabiotechchem supply?
We specialize in high‑purity plant extracts, research‑grade peptides, cognitive‑enhancing raw materials, nootropic compounds and nutritional bulk powder. All items are intended for laboratory‑research only, not for human‑consumption, medical treatment or cosmetic finished‑product without local qualification.
Q2 Are your products food‑grade / research‑grade?
We supply research‑grade raw material for lab tests, formulation study and academic experiment. Food‑grade specifications are available upon custom request.
Q3 Do you have factory qualification and certification?
Our production facility follows c‑GMP workshop rules. We can provide production qualification, batch‑test document, ISO‑related certificate on request.
Q4 Can I visit your factory?
Factory inspection is welcome. Please email us 7 working days ahead for appointment arrangement.
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Sample & Custom-Service
MOQ, free testing samples, custom synthesis and private-label options.
Q5 What is your Minimum Order Quantity?
High‑value peptide and nootropic raw materials support tiny starting order from milligram‑level / 1g. Conventional plant‑extract bulk powder MOQ starts at 100 g‑1 kg. Bulk drum orders (25kg) enjoy wholesale price.
Q6 Can I get free samples?
Small‑size testing‑samples are accessible. Buyers only bear international courier freight. We attach complete batch COA for every sample parcel.
Q7 Could you customize purity, solvent, salt‑form or blend formula?
Yes. We support custom‑made purity adjustment, peptide salt‑exchange, plant‑extract solvent selection (ethanol/water/CO2‑supercritical extraction) and multi‑ingredient mixed‑powder service. Send your detailed specification sheet via email.
Q8 Do you offer private‑label packaging?
Custom‑aluminum‑foil bag, vial and drum outer‑label service is available for bulk clients.
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Quality-Control Documents
The test reports and analytical methods B2B research buyers value most.
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Every batch ships with a COA. SDS/MSDS, TDS, HPLC‑purity report and mass‑spectrum identification are provided free on demand — fully aligned with laboratory qualification workflows.
Q9 What test reports will you provide with shipment?
Every batch comes with Certificate of Analysis (COA). SDS/MSDS, TDS technical datasheet, HPLC‑purity report, mass‑spectrum identification document are provided for free on demand.
Q10 What testing methods do you adopt for purity inspection?
We apply HPLC, LC‑MS, UV‑spectrophotometry, moisture test, heavy‑metal and microbe screening for each production batch. Third‑party lab testing is acceptable.
Q11 Is batch‑to‑batch stability guaranteed?
Strict raw‑material screening and fixed‑production workflow keep batch deviation within acceptable range. We will notify clients in advance once raw‑material source changes.
Q12 Can you do endotoxin inspection for cell‑experiment peptides?
Endotoxin‑free grade peptides and related test‑certificate are available for cell‑culture research.
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Packaging & Cold Storage
Moisture-proof packaging and our core 2–8℃ cold-chain handling for thermolabile goods.
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Cold-chain is our core business. All thermolabile biochemical goods are packed with ice‑pack + insulation foam box for constant‑temperature 2–8℃ delivery, with a cold‑storage reminder marked on the parcel surface.
Q13 How are goods packed?
Small‑quantity goods: sealed aluminium foil bag / lyophilized glass vial. Bulk stock: 25 kg sealed paper drum. Moisture‑proof, light‑proof packaging is adopted for sensitive biochemical raw‑materials.
Q14 What is the required storage temperature for your products?
- Lyophilized freeze‑dried peptides: long‑term storage ‑20℃;
- Reconstituted peptide liquid & temperature‑sensitive extracts: store strictly at 2‑8℃ under refrigeration;
- Keep packages sealed, away from sunshine, high‑temperature and damp environment.
Q15 Will you use cold‑chain packaging during shipment?
All thermolabile biochemical goods are packed with ice‑pack, insulation foam box for constant‑temperature delivery (2‑8℃). We mark cold‑storage reminder on parcel surface.
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CDEK International Shipping
Courier channels, delivery times, customs and how to handle transit issues.
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For Russian customers we offer two shipping choices: CDEK and Post Service (Russian Post). Temperature‑sensitive goods are prioritized via CDEK 2–8℃ cold‑chain; Post Service is the alternative for standard, non‑cold‑chain parcels. Special requirements (channel, packaging, declaration) can be negotiated — just tell our sales team. Once dispatched, inspect the parcel immediately and keep 2–8℃ items refrigerated.
Q16 Which courier channels do you support?
For international delivery we support DHL, FedEx, UPS, sea‑freight and air‑freight bulk shipment. For Russian‑based customers we offer two dedicated options — CDEK and Post Service (Russian Post). Thermolabile / temperature‑sensitive goods are prioritized via CDEK cold‑chain; Post Service is available for non‑cold‑chain parcels. Special shipping requirements can be negotiated — just tell our sales team.
Q17 How long will delivery take?
Express courier (DHL / FedEx / UPS / CDEK): 5‑10 working‑days. Air‑freight bulk cargo: 10‑18 days. Post Service to Russia is available for non‑cold‑chain parcels with regional lead times — we will confirm the exact estimate when you place the order. Once your parcel is marked delivered, inspect it immediately and keep 2‑8℃ items refrigerated. Reach out to us right away for any delivery‑related problem.
Q18 Who takes charge of customs clearance and import duty?
Buyers are responsible for local customs declaration, import tax and local‑law compliance. We supply all export documentation (certificate‑of‑origin, packing‑list, invoice) to assist customs‑check.
Q19 What should I do if the parcel gets damaged / leakage / temperature failure in transit?
Take photos of outer‑package, ice‑pack status and inner goods within 24 hours after receipt. Send evidence to our mailbox, and we arrange re‑shipment or compensation.
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Payment & After-sales
Payment terms, bulk discounts, ordering steps and quality complaints.
Q20 What payment terms do you accept?
Bank wire transfer, cryptocurrency payment, Russian Ruble settlement, Western‑Union. We issue formal Proforma‑Invoice before payment.
Q21 Can I get bulk‑order discount?
Unit price drops with larger purchasing weight. Long‑term cooperative clients enjoy stable preferential quotation.
Q22 How to place an official order?
Send your purchase list, required‑purity, weight and shipping‑address to our sales‑email. We send PI for confirmation. After payment confirmation, we arrange production and shipment.
Q23 What is your quality‑complaint policy?
Our QC team controls batch‑quality before dispatch. If defects are caused from our production side, we provide free replacement shipment or full‑fund refund.
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Research Notice
Compliance reminders, storage life, handling and operational FAQs.
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All merchandise is sold exclusively for scientific laboratory‑research. Clients shall not use our raw‑materials for oral‑intake, injection, or homemade supplements without local legal authorization.
Q24 Are these products permitted for human intake?
All merchandise is sold exclusively for scientific laboratory‑research. Clients shall not use our raw‑materials for oral‑intake, injection, homemade supplements without local legal authorization.
Q25 How long is the shelf‑life of lyophilized peptide powder?
2‑3 years under proper ‑20℃ sealed storage. Once dissolved, use the peptide solution within 30‑day (2‑8℃ refrigerated).
Q26 Can peptides be mixed and dissolved with other solvents?
Sterile bacteriostatic‑water is the common reconstitution solvent. Contact our technical team for personalized solubility suggestion.
Q27 What information should I provide for quotation?
Product name, required purity, purchasing‑weight, destination‑country and preferred courier.
Q28 Do you restock out‑of‑stock items?
Most hot‑selling raw‑materials keep permanent inventory. We inform buyers the restocking cycle for temporary‑out‑of‑stock goods.
Q29 Can I change my shipping‑address after payment?
Address revision is available before goods hand‑over to courier. Notify us promptly.
Q30 How can I track my CDEK / Post Service tracking‑number?
We email the tracking code once the parcel is dispatched. CDEK parcels can be tracked in real‑time on the official CDEK website; Post Service parcels are tracked via the Russian Post tracking system. Reach out to us if you need help locating your shipment.
Q31 When the parcel shows “delivered” on CDEK, what checks do I need?
Inspect outer‑box integrity, check ice‑pack residue, confirm no leakage. Put temperature‑sensitive biochemicals into 2‑8℃ refrigerator right after inspection. Email us if you have doubts.
Q32 How can I contact your support team?
Reach us by official mailbox, WhatsApp and online website message. We reply all working‑day inquiries within 12 hours.
Still have a question?
Email our sales team or chat on WhatsApp — we reply within 12 working hours.