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Hanna Instruments HI77400P pH 4.01 & 7.01 Calibration Buffer Sachets (10 × 20mL, 5 Each) Calibration Buffer Hanna Instruments

Hanna Instruments HI77400P pH 4.01 & 7.01 Calibration Buffer Sachets (10 × 20mL, 5 Each)

$34.99

The Hanna Instruments HI77400P Calibration Buffer Sachets provide premium pH 4.01 and 7.01 solutions for precise two‑point calibration of pH meters. Each 20mL sachet is sealed in light‑block foil to maintain freshness, clearly marked with lot number and expiration date, and formulated for a 5‑year shelf life when unopened — ensuring accuracy and reliability in every calibration.

• Color‑coded sachets make buffer value identification quick and error‑free

• High accuracy of ±0.01 pH at 25°C for dependable calibration results

• Temperature chart printed on each sachet for precise pH values across varying conditions

See All Specs

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Fast Delivery

Most items ship same day

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Manufacturer Warranty

All products are covered by manufacturer warranty

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After-Sale Support

24/7 support

The Hanna Instruments HI77400P Calibration Buffer Sachets provide premium pH 4.01 and 7.01 solutions for precise two‑point calibration of pH meters. Produced in accordance with ISO 3696/BS3978 standards, these buffers are formulated using high‑purity salts, deionized water, certified balances, and Class A glassware in a temperature‑controlled environment. Each sachet delivers values accurate to ±0.01 pH at 25^°C and is traceable to NIST Standard Reference Materials (SRMs), ensuring confidence and reliability in every calibration.

Convenience of individual packaging

Perfect for users who calibrate infrequently
Portable design makes them ideal for field use
Each sachet remains fresh until opened
Light‑block foil prevents UV oxidation that could alter buffer values

Each sachet marked with lot number and expiration date

Specially formulated for a 5‑year shelf life when unopened

Color‑coded label for easy pH buffer identification

Quickly distinguish between different buffer values
Formulation contains no dyes that could stain electrode reference cells

Shipping, Return, and Warranty Policy

At Blue Tiger Scientific, we are proud to distribute authentic Hanna Instruments products. The following policies apply to all purchases made through our store.

Shipping Policy

All orders are shipped via FedEx from Hanna Instruments' fulfillment center in Smithfield, Rhode Island.
FedEx Ground is the standard method; expedited options (2-Day, Overnight) are available for an additional cost.
Hanna Instruments only ships to residential or business addresses within the United States (no PO Boxes).
Orders placed after business hours, weekends, or holidays will ship the next business day, pending product and carrier availability.
Shipping timelines may vary depending on product availability, order size, and carrier logistics.
Blue Tiger Scientific and Hanna Instruments are not responsible for carrier delays, weather-related disruptions, or other unforeseen delivery issues once the order has shipped.

Return Policy

All return requests must be coordinated directly with Blue Tiger Scientific before a product is sent back.
Products must have a Return Merchandise Authorization (RMA) number issued by Blue Tiger Scientific before being returned.
Products must be returned in new or like-new condition, with the original packaging and proof of purchase (such as an invoice or packing slip).
Customers are responsible for return shipping costs unless otherwise stated.
Unauthorized returns (without an RMA) will be refused and returned at the customer's expense.
Returns are subject to inspection and approval. Products not in acceptable condition may be denied credit.
Some products, such as custom-built, special order, and hazardous materials, may not be eligible for return.

Warranty Policy

Hanna Instruments' products are covered by their Limited Warranty against defects in materials and workmanship under normal use.
All warranty claims and services are handled directly by Hanna Instruments.
Warranty periods vary by product. If unspecified, the standard warranty term is 18 months from the Hanna Instruments factory ship date.
If you experience an issue believed to be covered under warranty, please contact Hanna Instruments for guidance on how to submit your warranty request to Hanna Instruments.
Customers must follow Hanna Instruments' warranty submission process, including providing a claim number, product model and serial number, and a detailed description of the issue.
Hanna Instruments will determine whether products are repaired, replaced, or otherwise serviced under warranty.
Note: Warranty coverage does not apply to damage caused by misuse, accidents, unauthorized repairs, or improper storage and handling.

Important Notes

Some Hanna Instruments products are custom-made or built to order. Shipping will occur once the product is ready.
In the event of backorders, you may request partial shipments.
Delays beyond our control (e.g., material shortages, import delays, or carrier issues) may occasionally occur.

Questions about a product? Ask us here.

email us here: info@bluetigerscientific.com or live chat