Buffer solutions do not have the correct pH to calibrate pH meters. Buffers 4 and 7 work moderately, but not very accurately. They differ by about 0.14. A pH 10 buffer is far from ideal. About 0.30. It's so far away that my pH meters don't pick it up. After spending a little more and buying genuine branded buffers, both of my pH meters are properly calibrated. I won't buy this again.
3Pcs 500Ml CVNDKN Wash Bottles W/ Scale -16 Oz: Plastic Safety Lab Squeeze Bottle
13 Review
Graduated Erlenmeyer Glass Flask Set With Narrow Mouth - 500Ml Capacity
15 Review
Get 24 Pack Of 4 Oz. Amber Boston Round Glass Bottles With Droppers From GBO GLASSBOTTLEOUTLET.COM
11 Review
Laboy Glass 500ML Single Neck Round Bottom Boiling Flask Heavy Wall With 24/40 Joint Heating Reaction Receiving Flask Organic Chemistry Lab Glassware
16 Review