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pH Buffer Standards

For the calibration of pH-testers and pH-meters. These standards are made from analytical grade materials.

Buffer pH = 10.01

Carbonate buffer according to NIST, colour coded blue, pH = 10.01 @ 25°C.

  • 100505 Buffer pH = 10.01, 250 mL bottle ... $16.60 + GST
  • 100506 Buffer pH = 10.01, 500 mL bottle ... $23.60 + GST
  • 100507 Buffer pH = 10.01, 1 L bottle ... $33.40 + GST

(availability: next day)

Buffer pH = 4.01

Potassium phthalate buffer according to NIST, colour coded red, pH = 4.01 @ 25°C.

  • 100145 Buffer pH = 4.01, 250 mL bottle ... $17.50 + GST
  • 100146 Buffer pH = 4.01, 500 mL bottle ... $25.20 + GST
  • 100147 Buffer pH = 4.01, 1 L bottle ... $36.70 + GST

(availability: next day)

Buffer pH = 6.86

Phosphate buffer according to NIST, colour coded yellow, pH = 6.86 @ 25°C.

  • 100155 Buffer pH = 6.86, 250 mL bottle ... $16.90 + GST
  • 100156 Buffer pH = 6.86, 500 mL bottle ... $24.10 + GST
  • 100157 Buffer pH = 6.86, 1 L bottle ... $34.50 + GST

(availability: next day)

Buffer pH = 7.0

Phosphate buffer, colour coded green, pH = 7.00 @ 25°C.

  • 100165 Buffer pH = 7.0, 250 mL bottle ... $17.00 + GST
  • 100166 Buffer pH = 7.0, 500 mL bottle ... $24.20 + GST
  • 100167 Buffer pH = 7.0, 1 L bottle ... $34.70 + GST

(availability: next day)

Buffer pH = 9.18

Borate buffer according to NIST, colour coded turquoise, pH = 9.18 @ 25°C.

  • 100175 Buffer pH = 9.18, 250 mL bottle ... $16.60 + GST
  • 100176 Buffer pH = 9.18, 500 mL bottle ... $23.40 + GST
  • 100177 Buffer pH = 9.18, 1 L bottle ... $33.00 + GST

(availability: next day)