ITEM NAME:20pcs PH Meter Buffer Solution Powder 4.01 6.86 Easy Calibration Water Testing Descriptio n Description: 20 packs of popular pH buffer solutions,10 packs pH4.01 and 10 packs pH6.86 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 Powder buffer solution provide long shelf life and stability and are 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. Specifications: Each Pack Volume: 250 ml. Dimension:Approx. 7.5x6.5cm/2.95x2.56" Each powder packet/sachet makes 250ml of solution (when mixed with distilled or deionized water) Accuracy:  ±0.01pH at 25 °C Package Included: 10 x pH4.01 Calibration Powder 10 x pH6.86 Calibration Powder Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! 20pcs PH Meter Buffer Solution Powder 4.01 6.86 Easy Calibration Water Testing.It's lightweight, inexpensive and takes up very little space. Accuracy:  ±0.01pH at 25 °C. Simple to use. Powder has an indefinite shelf life. Put into solution only what you need,when you need it. We'd like to settle any problem in a friendly manner.
