SigmaUltra Buffers

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Useful pH Range

2 - (1)
3 - (1)
4 - (1)
6 - (8)
7 - (9)
8 - (8)
9 - (4)
10 - (1)

2-Amino-2-methyl-1,3-propanediol SigmaUltra, pH 10.0-12.0 (20 °C, 0.5 M in H₂O), ≥99%

7.8 - 9.7

8.8

2-Amino-2-methyl-1-propanol SigmaUltra, ≥95%

9.0 - 10.5

9.7

L-(+)-Lactic acid SigmaUltra, ~98% (titration)

ACES SigmaUltra, ≥99.0% (titration)

6.1 - 7.5

6.8

ADA SigmaUltra, ≥98% (titration)

6.0 - 7.2

6.6

AMPSO SigmaUltra, ≥99% (titration)

8.3 - 9.7

9

Ammonium acetate SigmaUltra, ≥98%

Ammonium tartrate dibasic SigmaUltra

BES SigmaUltra, ≥99.0% (titration)

6.4 - 7.8

7.1

BICINE SigmaUltra, ≥99% (titration)

7.6 - 9.0

8.3

BIS-TRIS propane SigmaUltra, ≥99.0% (titration)

6.3 - 9.5

6.8

BIS-TRIS SigmaUltra, ≥98.0% (titration)

5.8 - 7.2

6.5

Boric acid SigmaUltra, ≥99.5%

CAPSO SigmaUltra, pH 2.0-4.0 (20 °C, 0.5 M in H₂O), ≥99.0% anhydrous basis (TSOD, titration)

8.9 - 10.3

9.6

CAPS SigmaUltra, pH 3.0-7.0 (20 °C, 0.5 M in H₂O), ≥98.0% NaOH basis (titration)

9.7 - 11.1
9.7 - 11.1

10.4

CHES SigmaUltra, ≥99% (titration)

8.6 - 10.0

9.3

Citric acid monohydrate SigmaUltra, ≥99.5%

3.13

DIPSO SigmaUltra, pH 4.0-5.5 (20 °C, 0.1 M in H₂O), ≥98% (titration)

7.0 - 8.2

7.6

EPPS SigmaUltra, ≥99.5% (titration)

7.3 - 8.7

8

Ethylenediaminetetraacetic acid disodium salt dihydrate SigmaUltra, ~99%

Gly-Gly SigmaUltra, pH 4.5-6.0 (20 °C, 1 M in H₂O), >99.5% (titration)

7.5 - 8.9

8.2

Glycolic acid SigmaUltra, ≥98% (titration)

HEPES sodium salt SigmaUltra, ≥99.5% (titration)

6.8 - 8.2

7.5

HEPES SigmaUltra, pH 5.0-6.5 (20 °C, 1 M in H₂O), ≥99.5% (titration)

6.8 - 8.2

7.5

MES hydrate ≥99.5% (titration), pH 2.5-4.0 (20 °C, 0.5 M in H₂O), SigmaUltra

5.5 - 6.7

6.1

MOPS sodium salt SigmaUltra, ≥99.5% anhydrous basis (titration)

6.5 - 7.9

7.2

MOPSO sodium salt SigmaUltra, pH 10.0-12.0 (20 °C, 1 M in H₂O), ≥99% (titration)

6.2 - 7.6

6.9

MOPS SigmaUltra, >99.5% (titration)

6.5 - 7.9

7.2

PIPES SigmaUltra, ≥99% (titration)

6.1 - 7.5

6.8

POPSO SigmaUltra, ≥99% (titration)

7.2 - 8.5

7.8

Sodium acetate SigmaUltra, ≥99.0%

4.76

Sodium bicarbonate SigmaUltra, ≥99.5%

6.37

Sodium cacodylate trihydrate SigmaUltra, ~98%

Sodium chloride SigmaUltra, ≥99.5%

Sodium citrate tribasic dihydrate SigmaUltra, ≥99.0% (titration)

Sodium phosphate dibasic SigmaUltra, ≥99.0%

2.15

Sodium phosphate monobasic SigmaUltra, ≥99.0%

Sodium phosphate tribasic dodecahydrate SigmaUltra, ≥98.0% (titration)

TAPSO SigmaUltra, ≥99% (titration)

7.0 - 8.2

7.6

TAPS SigmaUltra, ≥99.5% (titration)

7.7 - 9.1

8.4

TES SigmaUltra, >99.5% (titration)

6.8 - 8.2

7.5

Tricine SigmaUltra, pH 4.0-6.0 (20 °C, 1 M in H₂O), ≥99% (titration)

7.4 - 8.8

8.1

Trizma^® base SigmaUltra, pH 10.5-12.0 (20 °C, 1 M in H₂O), ≥99.9% (titration)

7 - 9

8.1

Trizma^® hydrochloride SigmaUltra, pH 3.5-5.0 (20 °C, 0.5 M in H₂O), ≥99.0% (titration)

7.0 - 9.0

8.1

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