15 Packs pH Solution Powder, Compatible for All pH Meter/Tester, Accurate and Easy to use for Long Period.
Widely be used for testing pH balance of aquarium, pool, drinking water, RO system, Spa, hydroponics, etc
*15 packs ph calibration packets, no need to buy frequently.
*Pre-measured exactly for accurate results.
*longer shelf life(3 years) than liquid calibration solution (1 year)
*Sealed with moisture-proof individual packets, convenient for reserve and carry.
*Comes with a 2-year manufacturer guarantee.
Easy to Use:
1.Prepare 3 x 250ml distilled water in container, and take out 1 set ph powder: 1 x 4.01, 1 x 6.86, 1 x 9.18.
2.Empty each packets in the 3 containers separately, you'll get 3 x 250ml pH buffer solution kit.
3.Calibrate your pH meter with the pH solution.
*ph buffer powder kit
5 x 4.01 (Potassium Hydrogen Phthalate)
5 x 6.86 (Mixed phosphate)
5 x 9.18 (Borax)
*1x User's Guide