Terms of Sale

By submitting an order, creating an account, or otherwise purchasing from Pure Helix, purchaser accepts these Terms on their own behalf and on behalf of any entity they represent. If purchaser does not agree, they must not place an order.

An order is an offer to buy. No contract is formed until Pure Helix accepts the order by dispatching the materials or by sending written acceptance. An order confirmation, payment authorization, or receipt is an acknowledgement of receipt, not acceptance. Pure Helix may accept an order in part.

Any purchase order, standard terms, or other document issued by purchaser is rejected to the extent it adds to or conflicts with these Terms, unless Pure Helix agrees to it in a signed writing.

By placing an order, purchaser represents and warrants that they are (a) at least 21 years of age, (b) a qualified researcher, laboratory professional, or authorized purchasing agent for a research institution, and (c) acquiring materials solely for legitimate in-vitro, analytical, or reference purposes conducted in a controlled laboratory environment by personnel trained to handle them.

Purchaser will keep account and shipping information accurate and current, and is responsible for all activity under their account, including orders placed by anyone they allow to use it.

Pure Helix may request documentation of institutional affiliation or intended use, refuse or limit any order, cancel an order after acceptance with a full refund of amounts paid for the cancelled items, and suspend or close accounts that violate these Terms.

In plain termsResearch chemicals only — not drugs, supplements, or medical devices.

All materials sold by Pure Helix are research chemicals intended exclusively for laboratory research use. Materials are not drugs, dietary supplements, cosmetics, medical devices, or food within the meaning of the Federal Food, Drug, and Cosmetic Act (21 U.S.C. § 301 et seq.).

No product has been evaluated or approved by the U.S. Food and Drug Administration or any other regulatory body for use in humans or animals. Nothing supplied is intended for clinical, diagnostic, therapeutic, or household use. No representation is made regarding the safety, efficacy, or therapeutic value of any material.

Materials are supplied non-sterile and non-pyrogenic unless a lot's certificate of analysis states otherwise, and conform only to the specifications on the certificate published for that lot.

In plain termsNo human or animal use, resale, or clinical application. Ever.

Purchaser expressly agrees not to:

• Administer, ingest, inject, apply, or otherwise introduce any material into a human or animal body.
• Use any material in a clinical, diagnostic, or therapeutic procedure, or on human research subjects.
• Resell, repackage, relabel, or redistribute materials to any party for human or veterinary consumption, or to anyone under 21.
• Incorporate materials into any food, beverage, cosmetic, supplement, or consumer product.
• Represent materials as drugs, supplements, cosmetics, or as approved by any regulatory agency.
• Use materials in any manner inconsistent with applicable federal, state, local, or international law.

Any breach of this section is a material breach. Pure Helix may cancel pending orders, close the account, and report the conduct to the relevant authorities.

In plain termsPrices in USD, charged at order; we can correct pricing errors.

Prices are quoted in US dollars and may change without notice. The price that applies is the price displayed when the order is accepted. Payment is due in full at the time of order and is processed by a third-party payment provider under that provider's own terms; Pure Helix does not store full payment card details.

Applicable sales, use, or excise taxes, along with duties and import charges, are the responsibility of the purchaser unless stated otherwise at checkout.

Listings, prices, and availability may contain errors. Where a material pricing or description error is discovered, Pure Helix may cancel the affected order — before or after acceptance — and refund amounts paid in full. Backordered items may be shipped separately or cancelled and refunded.

Discount codes and promotions are single-use per customer unless stated otherwise, cannot be combined unless stated, carry no cash value, and may be withdrawn or modified at any time. Pure Helix may void discounts obtained through duplicate accounts or other misuse.

Initiating a chargeback without first contacting Pure Helix is a breach of these Terms. Purchaser is responsible for amounts properly owed and for reasonable costs of recovering them.

Materials ship from US-based fulfillment facilities. Delivery dates are estimates only, and time is not of the essence. Title and risk of loss pass to the purchaser upon delivery of the shipment to the carrier.

Purchaser is responsible for the accuracy of the delivery address and for the availability of appropriate storage on receipt. Shipments that are refused, unclaimed, or returned because of an incorrect address may be refunded less shipping and handling, and cold-chain items so returned cannot be refunded.

Pure Helix is not responsible for delays, seizures, or losses resulting from customs inspection, carrier handling, incorrect purchaser information, or force majeure. Where Pure Helix ships outside the United States, purchaser is the importer of record and is responsible for all import permits, duties, and local compliance.

In plain termsInspect on arrival; report issues quickly — replacement or refund is the remedy.

Purchaser must inspect each shipment promptly on arrival. Due to the nature of research materials, all sales are final and materials cannot be returned once accepted.

If a shipment arrives damaged, is short-shipped, or materially deviates from the published certificate of analysis for the lot, purchaser must notify Pure Helix in writing at hello@purehelix.bio within seven (7) days of delivery, with the lot number and supporting evidence. Failure to notify within that period is acceptance of the shipment.

For any valid claim, Pure Helix's entire liability and the purchaser's sole and exclusive remedy is, at Pure Helix's option, replacement of the affected material or refund of the amount paid for it. Materials that have been opened, reconstituted, mishandled, stored outside the stated conditions, or transferred to a third party are not eligible.

Purchaser is responsible for storing and handling materials in accordance with the storage conditions stated on the label and certificate of analysis, and for maintaining the cold chain after delivery. Published stability and purity data describe the material as tested at the point of release; Pure Helix makes no representation about a material's condition after it leaves its control.

Purchaser acknowledges that research materials are inherently hazardous, that their properties may not be fully characterized, and that safe handling requires appropriate training, facilities, and protective equipment. Purchaser assumes all risk associated with the receipt, storage, handling, transfer, use, and disposal of any material supplied by Pure Helix, and is responsible for disposing of materials and packaging in accordance with applicable law.

Materials and the website are supplied "as is." Except for conformity to the published certificate of analysis for the relevant lot, Pure Helix disclaims all warranties of any kind, whether express, implied, or statutory, including the implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement.

No advice or information, whether oral or written, obtained from Pure Helix or through its calculators, modelling tools, research library, or support channels creates any warranty not expressly stated here.

In plain termsOur liability is capped at what you paid for the order in question.

To the maximum extent permitted by law, Pure Helix shall not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, lost data, lost or invalidated experiments, business interruption, or personal injury, arising out of or related to the purchase, use, or misuse of any material, whether based in contract, tort, strict liability, or any other theory, even if advised of the possibility of such damages.

In no event shall Pure Helix's total aggregate liability arising out of or related to these Terms, the site, or any material exceed the total amount actually paid by the purchaser to Pure Helix during the twelve (12) months immediately preceding the event giving rise to the claim. The parties agree this allocation of risk is a fundamental basis of the bargain and that prices reflect it. Nothing in these Terms excludes liability that cannot lawfully be excluded, including liability for fraud; where a jurisdiction does not allow certain limitations, they apply to the fullest extent permitted.

In plain termsIf your use of the material causes a claim, you cover it.

Purchaser agrees to indemnify, defend, and hold harmless Pure Helix and its parent, affiliates, officers, directors, members, employees, contractors, suppliers, and agents from and against any and all claims, demands, actions, investigations, liabilities, losses, damages, penalties, and expenses (including reasonable attorneys' fees and costs of defense) arising out of or relating to the purchaser's use of, or dealings with, Pure Helix's business, platform, website, accounts, tools, or materials.

This obligation expressly includes, without limitation, claims arising from:

• Any administration of material to a human or animal, by the purchaser or any third party.
• Purchaser's breach of these Terms or of any representation or warranty made to Pure Helix.
• Purchaser's violation of any law, regulation, license condition, or third-party right.
• Resale, transfer, repackaging, relabeling, or export of material by the purchaser.
• Purchaser's handling, storage, transport, or disposal of material after delivery.
• Claims brought by purchaser's employees, institution, customers, or research subjects.

Pure Helix may assume exclusive defense and control of any matter subject to indemnification at the purchaser's expense, and purchaser agrees to cooperate in that defense. Purchaser may not settle any matter in a way that imposes an obligation on Pure Helix without its written consent. This section survives termination of the parties' relationship.

Purchaser is solely responsible for compliance with all applicable federal, state, local, and international laws governing the acquisition, possession, use, transport, and disposal of research materials, including obtaining any licence or permit required in their jurisdiction and complying with US export control and sanctions regulations.

Purchaser certifies they are not located in, nor acting on behalf of any party in, a sanctioned jurisdiction, are not a denied or restricted party, and will not export or re-export material in violation of law.

The website, the researcher workspace, the calculators and modelling tools, the research library, and all Pure Helix branding, text, imagery, and documentation are owned by Pure Helix or its licensors. Purchaser receives a limited, revocable, non-transferable licence to use them for their own internal research purposes.

Certificates of analysis may be shared for verification purposes without alteration. Purchaser may not scrape the site, resell access, misuse the tools, or attempt to interfere with the platform's operation or security.

The calculators, modelling outputs, and library content are provided for informational and in-vitro planning purposes only. They are not dosing guidance, medical advice, or a protocol for use in humans or animals, and must not be relied on as such.

Purchaser consents to receive order confirmations, receipts, certificates of analysis, and other transactional communications electronically at the email address on the account. Marketing emails are optional and can be unsubscribed from at any time without affecting transactional messages.

Legal notices to Pure Helix must be sent in writing to hello@purehelix.bio. Notices to purchaser are effective when sent to the account email address.

In plain termsDisputes go to binding arbitration in Alexandria, Virginia.

Informal resolution first. Before starting arbitration or filing suit, the complaining party will send a written description of the claim, the relief sought, and their contact details to the other party and allow thirty (30) days to reach a resolution. Notices to Pure Helix go to hello@purehelix.bio. This step is a condition precedent, and the limitations period is tolled while it runs.

Agreement to arbitrate. If the dispute is not resolved informally, any dispute, claim, or controversy arising out of or relating to these Terms, the site, an account, or any material — including its formation, interpretation, breach, termination, or validity — shall be resolved by final and binding individual arbitration administered by the American Arbitration Association under its Consumer Arbitration Rules or Commercial Arbitration Rules, whichever apply. This agreement to arbitrate is governed by the Federal Arbitration Act. The arbitrator, and not any court, decides all issues of arbitrability, except as stated below.

Small-claims carve-out. Either party may instead bring an individual claim in a small-claims court with jurisdiction over the matter, so long as the claim stays in that court and remains individual. Either party may also seek temporary or permanent injunctive relief, or relief for the misuse of intellectual property or confidential information, in the courts identified below without first arbitrating.

Class-action and jury waiver. To the fullest extent permitted by law, claims must be brought in an individual capacity only — not as a plaintiff or class member in any purported class, collective, consolidated, or representative proceeding — and the arbitrator may not consolidate claims or preside over any representative proceeding. Each party waives any right to a trial by jury. If this waiver is held unenforceable as to a particular claim, that claim alone proceeds in court and the rest stays in arbitration.

Procedure, seat, and costs. Arbitration will be conducted by a single arbitrator, seated in Alexandria, Virginia, and may proceed by written submissions, telephone, or video unless the arbitrator orders an in-person hearing. The arbitrator may award any relief a court could award to that individual party, and judgment on the award may be entered in any court of competent jurisdiction. Filing and administrative fees are allocated under the applicable AAA rules; each party bears its own attorneys' fees except where a statute or the arbitrator's award provides otherwise.

30-day right to opt out. Purchaser may reject this arbitration agreement by sending written notice to hello@purehelix.bio with the subject line "Arbitration Opt-Out" within thirty (30) days of first accepting these Terms, including their name, the email address on the account, and a clear statement that they wish to opt out of arbitration. A timely opt-out is effective for all future disputes, does not affect any other part of these Terms, and will not be held against the purchaser in any way. Opting out leaves disputes to the courts identified below, where the jury and class-action waivers still apply to the fullest extent permitted by law.

Governing law and venue. These Terms are governed by the laws of the Commonwealth of Virginia, without regard to its conflict-of-laws principles. For any dispute not subject to arbitration — because it falls within a carve-out, because arbitration was opted out of, or because a court holds the arbitration agreement unenforceable — the exclusive venue is the state or federal courts located in Alexandria, Virginia. The parties irrevocably consent to personal jurisdiction and venue in those courts and waive any objection based on inconvenient forum. The U.N. Convention on Contracts for the International Sale of Goods does not apply.

Changes and survival. If Pure Helix materially changes this section, purchaser may reject the change by sending notice to the address above within thirty (30) days of the change, in which case the prior version governs disputes that had already arisen. This section survives termination of the parties' relationship.

Any claim arising out of or related to these Terms or any material must be filed within one (1) year after the claim accrues, or it is permanently barred, except where applicable law requires a longer period.

Pure Helix is not liable for any delay or failure to perform resulting from causes beyond its reasonable control, including acts of God, labor disruption, carrier failure, supply shortage, regulatory action, cyber incident, war, epidemic, or utility or network outage. Where such an event continues for more than thirty (30) days, either party may cancel the affected order and Pure Helix will refund amounts paid for undelivered items.

If any provision is held unenforceable, it will be modified to the minimum extent necessary and the remaining provisions remain in full force. Pure Helix's failure to enforce a provision is not a waiver of it. Purchaser may not assign these Terms without written consent; Pure Helix may assign them in connection with a merger, acquisition, or sale of assets. Nothing in these Terms creates a partnership, agency, or employment relationship, and there are no third-party beneficiaries.

These Terms, together with the Research Use Only Agreement, the Privacy Policy, and any order-specific documentation, constitute the entire agreement between the parties and supersede all prior understandings regarding the subject matter. Sections covering prohibited uses, exclusive remedy, disclaimers, limitation of liability, indemnification, compliance and export control, governing law, and claim limitations survive completion or cancellation of any order.

Pure Helix may update these Terms at any time. The effective date at the top of this page reflects the current version, and the version in force at the time an order is accepted governs that order. Continued purchase of materials after an update constitutes acceptance of the revised Terms.