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🧪 Calibrate with confidence — because precision is the new power move.
This pH Buffer Calibration Kit includes two 250 mL bottles of scientifically standardized pH 4.00 and 7.00 solutions, each with waterproof color-coded labels for easy identification. Manufactured under strict lab protocols and NIST standards, it guarantees reliable calibration for all pH meters, ideal for hydroponics, aquariums, pools, and more. The kit comes with a free usage guide and offers over a year of shelf life, ensuring professional-grade accuracy and convenience.
| ASIN | B07B8JDKFL |
| Best Sellers Rank | #246,746 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #114 in Chemical Buffers |
| Date First Available | September 9, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.42 pounds |
| Manufacturer | Biopharm Inc |
| Package Dimensions | 9.25 x 4.33 x 2.64 inches |
G**Y
4.0 calibration
I was able to quickly calibrate my test equipment and store it properly.
N**U
Works well
Quick shipping, well packaged, no complaints
T**K
Quality
Good
J**.
Works as advertised
This stuff works well and helps me calibrate my ph meters.
H**T
Great ph calibration fluid
Great PH calibration fluid. Works well with my blue lab PH tester pen!
S**F
Significantly less than competing calibration buffers
A calibration solution has a very simple task, remain stable at a specific target pH. The Biopharm buffers do this at half the price of the Hanna buffers they replaced.
A**W
I might not understand
I bought this to calibrate my handheld pH meter. These 2 are accurate but from what I can tell most meters need 3 different pH samples (basic, neutral abd acidic) to properly calibrate them. Maybe there are some devices that only use 2 but every one I've owned requires 3.
A**A
Does it's job.
E**D
It works and much cheaper than other competitors
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