BUFFER SOLUTION pH 1 
BUFFER SOLUTION pH 1,68
BUFFER SOLUTION pH 1,68 (oxalic)
BUFFER SOLUTION pH 2
BUFFER SOLUTION pH 2 (phosphoric)
BUFFER SOLUTION pH 2 (phosphoric 0,125 mol/dm3)
BUFFER SOLUTION pH 2 (sulfuric)
BUFFER SOLUTION pH 2,2
BUFFER SOLUTION pH 2,5
BUFFER SOLUTION pH 2,5 (phosphoric 0,2 mol/dm3)
BUFFER SOLUTION pH 2,8 (phosphoric)
BUFFER SOLUTION pH 3
BUFFER SOLUTION pH 3 (citrate 0,25 mol/dm3)
BUFFER SOLUTION pH 3 (phosphoric 0,1 mol/dm3)
BUFFER SOLUTION pH 3 (phosphoric)
BUFFER SOLUTION pH 3,2 (phosphoric)
BUFFER SOLUTION pH 3,25 (phosphoric)
BUFFER SOLUTION pH 3,4 (phosphoric)
BUFFER SOLUTION pH 3,5
BUFFER SOLUTION pH 3,5 (phosphoric)
BUFFER SOLUTION pH 3,6
BUFFER SOLUTION pH 3,7
BUFFER SOLUTION pH 4
BUFFER SOLUTION pH 4 coloured – yellow
BUFFER SOLUTION pH 4,0 (buffered with copper sulfate)
BUFFER SOLUTION pH 4 (0,1 mol/dm3)
BUFFER SOLUTION pH 4,01
BUFFER SOLUTION pH 4,4 (phtalate)
BUFFER SOLUTION pH 4,4 (acetic)
BUFFER SOLUTION pH 4,5 (octanowy)
BUFFER SOLUTION pH 4,5 (phosphoric 0,05 mol/dm3)
BUFFER SOLUTION pH 4,5 (ammonium acetate 0,5 mol/dm3)
BUFFER SOLUTION pH 4,5 (ammonium acetate 0,5 mol/dm3)
BUFFER SOLUTION pH 4,5 (sodium acetate)
BUFFER SOLUTION pH 4,6 (acetate)
BUFFER SOLUTION pH 4,7 (acetate)
BUFFER SOLUTION pH 5
BUFFER SOLUTION pH 5 (citric)
BUFFER SOLUTION pH 5 (phosphoric)
BUFFER SOLUTION pH 5 (acetic)
BUFFER SOLUTION pH 5 (sodium acetate)
BUFFER SOLUTION pH 5,2
BUFFER SOLUTION pH 5,2 (acetic)
BUFFER SOLUTION pH 5,4 (phosphoric 0,067 mol/dm3)
BUFFER SOLUTION pH 5,5
BUFFER SOLUTION pH 5,5 (phosphoric – citrate)
BUFFER SOLUTION pH 5,5 (phosphoric)
BUFFER SOLUTION pH 5,5 (acetic)
BUFFER SOLUTION pH 5,6 (phosphoric)
BUFFER SOLUTION pH 5,8 (phosphoric)
BUFFER SOLUTION pH 6
BUFFER SOLUTION pH 6 (phosphoric)
BUFFER SOLUTION pH 6 (acetate)
BUFFER SOLUTION pH 6,4 (phosphoric)
BUFFER SOLUTION pH 6,4 (ftalate 0,5 mol/dm3)
BUFFER SOLUTION pH 6,5 (Clark-Lubs’s)
BUFFER SOLUTION pH 6,5 (phosphoric)
BUFFER SOLUTION pH 6,5 (phosphoric 0,1 mol/dm3)
BUFFER SOLUTION pH 6,5 (acetic)
BUFFER SOLUTION pH 6,6
BUFFER SOLUTION pH 6,7(phosphoric 0,1 mol/dm3)
BUFFER SOLUTION pH 6,8
BUFFER SOLUTION pH 6,8 (NaCl solution buffered with phosphates)
BUFFER SOLUTION pH 6,8 (phosphoric)
BUFFER SOLUTION pH 6,8 (tris-HCl 1 mol/dm3)
BUFFER SOLUTION pH 7
BUFFER SOLUTION pH 7 coloured – green
BUFFER SOLUTION pH 7 (phosphoric)
BUFFER SOLUTION pH 7 (phosphoric 0,025mol/dm3)
BUFFER SOLUTION pH 7 (phosphoric 0,03mol/dm3)
BUFFER SOLUTION pH 7 (phosphoric 0,05mol/dm3)
BUFFER SOLUTION pH 7 (phosphoric 0,063mol/dm3)
BUFFER SOLUTION pH 7 (phosphoric 0,067mol/dm3)
BUFFER SOLUTION pH 7 (phosphoric 0,1mol/dm3)
BUFFER SOLUTION pH 7,01
BUFFER SOLUTION pH 7,2
BUFFER SOLUTION pH 7,2 (phosphoric)
BUFFER SOLUTION pH 7,2 (buffered salt solution)
BUFFER SOLUTION pH 7,4
BUFFER SOLUTION pH 7,4 (phosphoric)
BUFFER SOLUTION pH 7,4 (tris)
BUFFER SOLUTION pH 7,4 (tris-sodium acetate)
BUFFER SOLUTION pH 7,4 (NaCl solution buffered with phosphates)
BUFFER SOLUTION pH 7,5
BUFFER SOLUTION pH 7,5 (boric)
BUFFER SOLUTION pH 7,5 (phosphoric 0,05mol/dm3)
BUFFER SOLUTION pH 7,5 (phosphoric 0,2mol/dm3)
BUFFER SOLUTION pH 7,5 (phosphoric 0,33mol/dm3)
BUFFER SOLUTION pH 7,5 (tris)
BUFFER SOLUTION pH 7,5 (tris-HCl)
BUFFER SOLUTION pH 8
BUFFER SOLUTION pH 8 (borax)
BUFFER SOLUTION pH 8 (boric 0,0015mol/dm3)
BUFFER SOLUTION pH 8 (phosphoric 0,02mol/dm3)
BUFFER SOLUTION pH 8 (phosphoric y 0,1mol/dm3)
BUFFER SOLUTION pH 8 (phosphoric 1mol/dm3)
BUFFER SOLUTION pH 8 (sodium phosphate 0,02mol/dm3)
BUFFER SOLUTION pH 8 (tris-HCl)
BUFFER SOLUTION pH 8 (tris-HCl 1mol/dm3)
BUFFER SOLUTION pH 8 (tris-sodium acetate)
BUFFER SOLUTION pH 8,1 (tris(hydroksymetylo)aminometanu)
BUFFER SOLUTION pH 8,3 (tris-glycine)
BUFFER SOLUTION pH 8,3 (tris-HCl)
BUFFER SOLUTION pH 8,4 (tris-EDTA)
BUFFER SOLUTION pH 8,5 (phosphoric)
BUFFER SOLUTION pH 8,5 (tris-sodium acetate)
BUFFER SOLUTION pH 8,8
BUFFER SOLUTION pH 8,8 (tris-HCl)
BUFFER SOLUTION pH 8,8 (tris-HCl 1,5mol/dm3)
BUFFER SOLUTION pH 8,8 (tris-HCl 3mol/dm3)
BUFFER SOLUTION pH 9
BUFFER SOLUTION pH 9 coloured – red
BUFFER SOLUTION pH 9 (phosphoric)
BUFFER SOLUTION pH 9 (tris)
BUFFER SOLUTION pH 9 (tris-HCl 0,05mol/dm3)
BUFFER SOLUTION pH 9,18
BUFFER SOLUTION pH 9,21
BUFFER SOLUTION pH 9,22
BUFFER SOLUTION pH 9,5 (ammonium chloride)
BUFFER SOLUTION pH 10
BUFFER SOLUTION pH 10 (ammonia)
BUFFER SOLUTION pH 10 (boric)
BUFFER SOLUTION pH 10 (ammonium chloride)
BUFFER SOLUTION pH 10,01
BUFFER SOLUTION pH 10,3 (ammonium carbonate 0,1mol/dm3)
BUFFER SOLUTION pH 10,4 (boric)
BUFFER SOLUTION pH 10,3 (ammonium chloride)
BUFFER SOLUTION pH 10,9
BUFFER SOLUTION pH 11
BUFFER SOLUTION pH 11,3 (phosphoric 0,1mol/dm3)
BUFFER SOLUTION pH 12

BUFFER SOLUTION REDOX 220mV
BUFFER SOLUTION REDOX 465mV
BUFFER SOLUTION REDOX 360mV
BUFFER SOLUTION REDOX 650Mv
CITRIC BUFFER SOLUTION FOR FLUORIDE DETERMINATION

Primal patterns pH (25°C):
BUFFER SOLUTION pH 1,68 +/- 0,007 (oxalic 0,05 mol/dm3)
BUFFER SOLUTION pH 3,78 +/- 0,003 (citric 0,05 mol/dm3)
BUFFER SOLUTION pH 4,01 +/- 0,003 (phthalate 0,05 mol/dm3)
BUFFER SOLUTION pH 6,86 +/- 0,003 (phosphoric 1÷1)
BUFFER SOLUTION pH 7,00 +/- 0,003 (phosphoric 1÷ 1,37)
BUFFER SOLUTION pH 7,41 +/- 0,003 (phosphoric 1÷ 3,5)
BUFFER SOLUTION pH 9,18 +/- 0,005 (boric 0,01 mol/dm3)
BUFFER SOLUTION pH 10,01 +/- 0,005 (carbonate)

Secondary reference materials pH:
BUFFER SOLUTION pH 1,68 +/- 0,01 (oxalic 0,05 mol/dm3)
BUFFER SOLUTION pH 3,78 +/- 0,01 (citric 0,05 mol/dm3)
BUFFER SOLUTION pH 4,01 +/- 0,01 (phthalate 0,05 mol/dm3)
BUFFER SOLUTION pH 6,86 +/- 0,01 (phosphoric 1÷1)
BUFFER SOLUTION pH 7,00 +/- 0,01 (phosphoric 1÷ 1,37)
BUFFER SOLUTION pH 7,41 +/- 0,01 (phosphoric 1÷ 3,5)
BUFFER SOLUTION pH 9,18 +/- 0,02 (boric 0,01 mol/dm3)
BUFFER SOLUTION pH 10,01 +/- 0,02 (carbonate)
BUFFER SOLUTION pH 12,4 +/- 0,1 (saturated calcium hydroxide solution at 25°C)