Each sachet makes 250mL of buffer solution. It provides indefinite or long shelf life and stability, ideal for low volume use. It’s lightweight, inexpensive and takes up very little space. These buffers are accurate to within ±0.01pH units @ 25°C and remain stable over long periods of time. Put into solution only what you need, when you need it.

– 3 packs of pH buffer solutions, pH4.01, pH6.86 and pH9.18
– Simple to use. Just add 250ml per powder packet
– Powder has an indefinite shelf life
– Easy 3-step procedure is written at the back of the packet

– Each powder packet/sachet makes 250ml of solution (when mixed with distilled or deionized water)
– Accuracy: ±0.01pH at 25°C

Set Includes
1 x pH4.01 Calibration Powder
1 x pH6.68 Calibration Powder
1 x pH9.18 Calibration Powder

Weight 0.01 kg
Dimensions 10 × 5 × 1 cm


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