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  • <White digital pH meter on a white lab worktop with an analyst wearing a glove holding the black probe in a glass beaker of purple coloured, clear liquid and getting a reading of pH 7.16. Credit> 95223342 © Puntasit Choksawatdikorn | Dreamstime.com
    95223342 © Puntasit Choksawatdikorn | Dreamstime.com
  • <On a blue sky and wispy cloud background, an analyst checking a pH test strip with a colour chart to determine the orange colour is equivalent to pH 6.8. Credit> AdobeStock_201253305
    AdobeStock_201253305
  • <On a white lab worktop, a colour pH chart of indicators from red and pH 1 via orange to pH4, yellow pH 6, green pH 7, and violet pH 10 to 14, next to two sample bottles and test strips. Credit> AAdobeStock_216414398
    AAdobeStock_216414398
  • <Digital white pH meter on a black stone effect lab worktop with a range of buffers, and an analyst hand wearing blue gloves holding the white probe in a glass beaker of colourless liquid. Credit> AdobeStock_296409151
    AdobeStock_296409151
  • <Poster illustration of the pH scale on linear, triangular, and two semi-circular dials with needles from pH 0 to 6 acidic coloured red through orange, yellow and green, neutral pH 7 green, and alkaline pH 8 to 14 through blue and violet. Credit> AdobeStock_248407931
    AdobeStock_248407931
By GMP-SOP-Download Laboratory

USP 791 pH

$22.00 USD
$22.00 USD
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SOP and report form for the measurement of the pH of liquids and solutions by Quality Control according to USP <791> and EP 2.2.3 to determine their acidity or alkalinity

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<White digital pH meter on a white lab worktop with an analyst wearing a glove holding the black probe in a glass beaker of purple coloured, clear liquid and getting a reading of pH 7.16. Credit> 95223342 © Puntasit Choksawatdikorn | Dreamstime.com
$22.00 USD
$22.00 USD