Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches Available on GSA/VA Contract for Federal Government customers only.

Ensure fresh, ready to use standards for pH calibration with Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches.

Manufacturer: Thermo Scientific™ 910425

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Catalog No. 13-641-274

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Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days thereafter. Disclaimer to internal research use restriction: Any restrictions on the purchaser to utilize the product(s) for internal research purposes only does not apply to the product(s) on the web pages associated with this statement.


    Quantity 25 x 15mL,25 x 15mL
    pH 4.01
    Description pH 4.01 Buffer
    For Use With single use for pH calibration,single use for pH calibration
    NIST Traceable Yes,Yes
    Packaging Pouch
    Solution Type Buffer solution,Buffer solution
    pH Value 4.01
    Container Size 15mL
    Container Type Pouch

    Ensure fresh, ready to use standards for pH calibration with Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches. Buffers are color coded for ease of use. All Orion pH buffers are traceable to NIST™ standard reference materials.

    • Color coded: pH 4.01 buffer is pink, pH 7.00 buffer is yellow, and pH 10.01 buffer is blue
    • Packaged with buffer/temperature tables for accurate calibrations and NIST traceability
    • Manufactured under ISO 9000 quality standards
    • Pouches are 15mL each and are available in 10 packs or 25 packs


    The following part numbers have been changed due to a recent system upgrade.

    Old Part Number: 910410

    New Part Number: 910410-WA

    Old Part Number: 911025

    New Part Number: 911025-WA

    Please use the new part number when placing an order or requesting a quote. The old and new part numbers are interchangeable on Certificate of Analysis and Material Data Safety Sheet (MSDS) files.

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