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Biopharm

Biopharm pH 4.00, 7.00 & 10.00 Calibration Buffer 3-Pack, 500 mL Each

  • Based on 496 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Sep 6
Order within 11 hours and 16 minutes
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Size: Pints (500 mL)


Features

  • NIST Reference Calibrated
  • QR Codes on Labels Lead to Downloadable COAs
  • Color Coded for Easy Identification
  • Lot Numbered and Expiration Dated
  • 500 mL (1.06 Pint) Poly Bottles, Individually Bagged
  • For Pharmaceutical, Academic, Research and Industrial Labs

Description

These buffer calibration solutions are suitable for the calibration of all pH meters. Each production lot is manufactured in our own laboratory following carefully controlled written procedures and standardized against NIST standard reference materials (SRM) for high accuracy. The finished product is assigned a unique Lot number and expiration date. These products will have greater than one year shelf life when received. Certificate of analysis and traceability included.

Brand: Biopharm


Item Volume: 1500 ml


Boiling point: 100 °C


Percentage assay: 100


GHS health hazard: Non hazardous


Boiling Point: 100 °C


% Assay of Chemical(s): 100


Container Type: Bottle


Item Form: Solution


GHS Health Hazard: Non hazardous


GHS Physical Hazard: Non hazardous


Volume: 1500 ml


Brand Name: Biopharm


Item Highlight: NIST Traceable. COAs available. Values at 25C. 1.06 Pint Each. Reference Standard Solutions Compatible with All pH Meters


Manufacturer: Biopharm Inc


UPC: 721272377101


Part Number: BB8886X


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • THUMBS UP!
Size: 8.4 oz (250 mL)
Good coice for pool meter calibration
Reviewed in the United States on July 15, 2026 by scott forsythe
    • .
Size: Pints (500 mL)
I use this stuff to calibrate my pH meter.
Reviewed in the United States on August 4, 2026 by Stanley Andler
    • I am really pleased with this company's products
Size: 8.4 oz (250 mL)
I am really pleased with this company's products. I calibrated a pH meter to the 7.0 standard and then testing using Biopharm's 4.0 and 10.0 standard i obtained 3.94 and 10.10. The meter is only accurate +/- 0.1 pH so these standards are WELL within the accuracy of the meter. In addition the 3 buffers were efficiently packed in a box that can be reused for storage. The standards are also packed in a narrow neck bottle with a tight lid. (Minimising evaporation and CO2 absorbtion from the atmosphere.) The buffers were packed in order 4, 7, 10 from left to right and the NIST trace sheets were also in order front to back. I mention this because it shows the company pays very strict attention to details and order. That is exactly what i want from a quantitative chem lab producing standard solutions. From now on i am purchasing all my standard solutions from these people. THANKS! ... show more
Reviewed in the United States on July 2, 2017 by Peter Garner
    • Good stuff!
Size: 8.4 oz (250 mL)
They came in and are doing great, we are glad that the expiration dates are far out, We don't use a lot of this, so our standards usually expire before the bottles are empty.
Reviewed in the United States on February 1, 2026 by I. Walton
    • Its Buffer
Size: Gallons (3.8 L)
Buffer but at a real good price.
Reviewed in the United States on August 3, 2026 by Mike H.
    • Works great.
Size: Pints (500 mL)
Works great.
Reviewed in the United States on January 20, 2026 by Clinton J Gregg
    • Todo según lo pactado
Size: 8.4 oz (250 mL)
Excelente
Reviewed in the United States on January 5, 2026 by Christian Fernandez
    • My New Go-To pH Buffers
Size: 8.4 oz (250 mL)
Great value and a nice size that won't expire before I use it all. Solutions were accurate and came with certificates. pH 10 buffer read 0.02 higher than indicated on paperwork, but the 10 buffer is the hardest to keep stable and needs to stay fresh, so that's not bad. Other pH 10 buffers I have received have been off by as much as 0.45. These will be my go-to pH buffers if the price remains this reasonable. ... show more
Reviewed in the United States on March 18, 2017 by Kerri

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