Electrochemistry Buffers

Buffer solutions suitable for use as reference and calibration standards for measuring pH values.

1 – 15 of 655 results

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Thermo Scientific™ Orion™ pH Buffer Bottles

Perform accurate, reproducible pH calibrations with these color-coded buffer bottles.

Pricing and Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Traceability to NIST	Yes
Physical Form	Liquid
Chemical Name or Material	pH Buffer, bottles

Buffer Solution pH4.00 (Phthalate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

MDL Number: 217672

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Specifications

MDL Number	217672

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pH Buffers, Twin Neck, Fisherbrand™

Perform accurate pH calibrations with color-coded, twin neck Fisherbrand™ pH Buffer Bottles.

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Specifications

For Use With (Application)	pH calibration

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Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches

Ensure fresh, ready-to-use standards for pH calibration with these pH Buffer individual use pouches.

Pricing and Availability
Specifications

Boiling Point	100°C
For Use With (Equipment)	pH Meter and Electrode, single-use
Solubility Information	Soluble
Traceability to NIST	Yes
Packaging	Pouch
Physical Form	Liquid
Chemical Name or Material	pH Buffer, individual use pouches
For Use With (Application)	pH calibration
Solution Type	Buffer

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Technical pH Buffer Solutions, METTLER TOLEDO™

Provides a reliable all-around pH buffer. Mettler Toledo™ Technical pH Buffer Solution are specified to two decimal places and are traceable to NIST standards. Color-coded solution comes in a handy 250mL plastic bottle with no-fuss labels.

Pricing and Availability
Specifications

For Use With (Equipment)	pH Electrode
Traceability to NIST	Yes
Quantity	250 mL
Grade	Technical
For Use With (Application)	pH measurement, electrode calibration

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Buffer solution pH 4, Citrate buffer

CAS: 68-04-2 | C₈H₅KO₄

Pricing and Availability
Specifications

Name Note	Phthalate buffer
CAS	7732-18-5
MDL Number	MFCD00130806
Color	Colorless
Traceability to NIST	Traceable to NIST
Packaging	Plastic bottle
Physical Form	Liquid
pH	3.98 to 4.02 (20°C)
Chemical Name or Material	Buffer solution pH 4
Molecular Formula	C₈H₅KO₄
Formula Weight	204.23

CAS	7732-18-5
Color	Colorless
Packaging	Plastic bottle
Physical Form	Liquid
pH	9.98 to 10.02 (20°C)
Health Hazard 1
Chemical Name or Material	Buffer solution pH 10

Thermo Scientific Chemicals Sodium citrate, 0.5M buffer soln., pH 5.0

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Specifications

Health Hazard 3	GHS P Statement P280-P305+P351+P338-P310 Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.
MDL Number	MFCD00012462
Health Hazard 2	GHS H Statement H318 Causes serious eye damage.
Color	Colorless
Solubility Information	It is soluble in water (29.4g/L) at 20°C. Insoluble in ethanol.
Physical Form	Liquid
pH	5.0
Health Hazard 1	Danger
Chemical Name or Material	Sodium citrate buffer soln.
TSCA	No
Recommended Storage	Keep cold
Concentration	0.5 M
Odor	Odorless

Thermo Scientific Chemicals Sodium borate, 0.5M buffer soln., pH 8.5

CAS: 1330-43-4 Molecular Formula: B4Na2O7 Molecular Weight (g/mol): 201.21 MDL Number: MFCD00081185 InChI Key: NXSVMNYRVBQCMO-UHFFFAOYSA-N IUPAC Name: disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate) SMILES: [Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2

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Specifications

CAS	1330-43-4
Molecular Weight (g/mol)	201.21
MDL Number	MFCD00081185
SMILES	[Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2
IUPAC Name	disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate)
InChI Key	NXSVMNYRVBQCMO-UHFFFAOYSA-N
Molecular Formula	B4Na2O7

Buffer solution pH 4, Phthalate buffer, traceable to NIST, ready to use

CAS: 877-24-7 | C₈H₅KO₄

Pricing and Availability
Specifications

CAS	7487-94-7
MDL Number	MFCD00217672
Solubility Information	Solubility in water: miscible.
Physical Form	Liquid
Chemical Name or Material	Buffer solution pH 4
Concentration	1.0% (Potassium hydrogen phthalate)
Molecular Formula	C₈H₅KO₄
Formula Weight	204.22

Thermo Scientific Chemicals Sodium phosphate, 0.2M buffer soln., pH 7.4

Pricing and Availability
Specifications

MDL Number	MFCD00146206
Solubility Information	Miscible with water. Immiscible with alcohol.
Physical Form	Liquid
pH	7.4
Chemical Name or Material	Sodium phosphate buffer soln.
TSCA	Yes
Recommended Storage	Ambient temperatures
Concentration	0.2 M

Thermo Scientific Chemicals Borate, 0.5M buffer soln., pH 9.5

Pricing and Availability
Specifications

CAS	1330-43-4
Molecular Weight (g/mol)	201.21
MDL Number	MFCD00081185
SMILES	[Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2
IUPAC Name	disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate)
InChI Key	NXSVMNYRVBQCMO-UHFFFAOYSA-N
Molecular Formula	B4Na2O7

Thermo Scientific Chemicals Sodium citrate, 0.5M buffer soln., pH 6.5

Pricing and Availability
Specifications

MDL Number	MFCD00012462
Color	Colorless
Solubility Information	Soluble in water.
Physical Form	Liquid
pH	6.5
Chemical Name or Material	Sodium citrate buffer soln.
TSCA	Yes
Recommended Storage	Keep cold
Concentration	0.5 M
Odor	Odorless

pH 7.01 Calibration Buffer Sachets, Hanna Instruments™

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Buffer solution pH 4.01 (+/-0.022 @ 25oC) No Color Specpure NIST Traceable

CAS: 1336-21-6 | H5NO | 35.05 g/mol

Pricing and Availability
Specifications

Molecular Weight (g/mol)	35.05
ChEBI	CHEBI:18219
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Buffer solution
SMILES	N.O
InChI Key	VHUUQVKOLVNVRT-UHFFFAOYSA-N
Vapor Pressure	23 hPa (17mm Hg) at 20°C
PubChem CID	14923
MDL Number	MFCD00066650
Solubility Information	Miscible with water.
TSCA	Yes
Recommended Storage	Ambient temperatures
IUPAC Name	azanium;hydroxide
Molecular Formula	H5NO
Odor	Odorless

Electrochemistry Buffers

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Technical pH Buffer Solutions, METTLER TOLEDO™ Greener Choice ProductThis product offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More About the Greener Choice Program

Technical pH Buffer Solutions, METTLER TOLEDO™