Buffers and Standards

Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.

The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:

Red: pH 4.0
Yellow: pH 7.0
Blue: pH 10.0

Chromatography Standards (21,779)

Spectroscopy Standards (6,010)

General Chemistry Solutions (5,215)

Matrix Blanks and Standardization Solutions (4,320)

Life Science Buffers (3,850)

Electrochemistry Buffers (2,312)

Environmental Testing Standards (1,928)

Electrochemistry Standards (1,218)

Karl Fischer Buffers and Reagents (481)

Viscosity Standards (254)

Isotope Standards (246)

Quality Control and Proficiency Samples (206)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (57)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (4)

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Grade

AAS (56)
AAS Standard (11)
ACS (59)
ACS Reagent (26)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)

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Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 g/mol (1)
100.12 (1)
100.121 (1)
100.15 (1)

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Quantity

0.1 mL (1)
0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Box (1)
1 Ea. (4)

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Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)
≥49% (2)
≥50% (3)

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pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (3)
>12 (43)
>13 (104)
>8 (1)
<0.5 (3)

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Solvent or Matrix

#2 Diesel Fuel (12)
10% HCl (19)
10% HCl/1% HNO₃ (1)
10% HNO3 (13)
15% HCl (3)
15% HNO₃ (2)
2% HCl (29)

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Concentration

≈0.000027 M (3)
≈0.0035 M (3)
≥30% (1)
≤0.1% in nitric acid (1)
≤2.5% KCl (T) (8)
0.00017 M (3)
0.001 M KCl (1)

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Physical Form

Aqueous Solution (26)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Crystalline (17)
Crystalline Powder (143)

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Technique

AA (472)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)
Calibration and Verification of Kinematic and Dynamic Viscosity Test (15)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (433)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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46 – 60 of 42,466 results

Invitrogen™ Tris (1 M), pH 7.0, RNase-free

Invitrogen Molecular biology grade, 1M Tris, pH 7.0 solution is supplied in one bottle. The buffer is certified RNase-free, economical, and ready-to-use.

Pricing & Availability
Specifications

Formulation	1,3-Propanediol, 2-Amino-2-(Hydroxymethyl)-,Hydrochloride
Physical Form	Liquid
pH	7
Grade	Molecular Biology
Recommended Storage	Store at room temperature.
Concentration	1 M
Product Line	Ambion

Tris-Glycine-SDS, 10X Solution (Electrophoresis), Fisher BioReagents™

Pricing & Availability
Specifications

Color	Undesignated
Physical Form	Liquid
Chemical Name or Material	Tris-Glycine-SDS
Grade	Electrophoresis
Identification	Pass Test
DNase	DNase free
Filtered Through	Filtered through a 0.2-micron filter.
ChemAlert Storage Symbol	Gray
Name Note	10X Solution
Concentration or Composition (by Analyte or Components)	0.25M Tris Base, 1.92M Glycine, and 1.0% (w/v) SDS.
CAS	151-21-3
Protease	Protease free
Synonym	TG-SDS
Purity Grade Notes	DNase-, RNase- and Protease-Free
Recommended Storage	RT

Hydrochloric acid, 1.0N Standardized Solution

CAS: 7647-01-0 Molecular Formula: ClH Molecular Weight (g/mol): 36.46 MDL Number: MFCD00011324 MFCD00792839 InChI Key: VEXZGXHMUGYJMC-UHFFFAOYSA-N PubChem CID: 313 ChEBI: CHEBI:17883 SMILES: Cl

Pricing & Availability
Specifications

PubChem CID	313
CAS	7647-01-0
Molecular Weight (g/mol)	36.46
ChEBI	CHEBI:17883
MDL Number	MFCD00011324 MFCD00792839
SMILES	Cl
InChI Key	VEXZGXHMUGYJMC-UHFFFAOYSA-N
Molecular Formula	ClH

Ricca Chemical Company Color Standard, APHA/Hazen (Platinum-Cobalt), Color = 500, Ricca Chemical

Pricing & Availability
Specifications

Name Note	Color= 500
CAS	7732-18-5
CAS Min %	0.09
Packaging	Amber Glass Bottle
Chemical Name or Material	Color Standard
Grade	APHA/Hazen
Melting Point	Approximately 0°C
CAS Max %	0.09

Fisher Scientific TISAB Concentrate, Fisherbrand

Pricing & Availability

TE Buffer, Tris-EDTA, 1X Solution, pH 7.4, Molecular Biology, Fisher BioReagents™

Tris-EDTA (TE) is routinely used for suspending nucleic acid samples.

Pricing & Availability
Specifications

Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Tris-EDTA
Grade	Molecular Biology
DNase	DNase free
Filtered Through	Filtered through a 5-micron filter.
ChemAlert Storage Symbol	Gray
Name Note	1X Solution, pH 7.4
CAS	7732-18-5
Protease	Protease free
Health Hazard 3	May cause eye, skin, and respiratory tract irritation. Avoid contact with skin and eyes. Do not breathe dust. Do not breathe vapors or spray mist.
Health Hazard 2	CAUTION!
pH	7.4 to 8.1
Synonym	TE
Recommended Storage	RT

Invitrogen™ Novex™ Tris-Glycine Native Sample Buffer (2X)

Ideal for native running conditions with NuPAGE Tris-Acetate gels

Pricing & Availability

Hydrochloric acid, 0.1N Standardized Solution

CAS: 7647-01-0 Molecular Formula: ClH Molecular Weight (g/mol): 36.46 MDL Number: MFCD00011324 MFCD00792839 InChI Key: VEXZGXHMUGYJMC-UHFFFAOYSA-N PubChem CID: 313 ChEBI: CHEBI:17883 IUPAC Name: hydrogen chloride SMILES: Cl

Pricing & Availability
Specifications

PubChem CID	313
CAS	7647-01-0
Molecular Weight (g/mol)	36.46
ChEBI	CHEBI:17883
MDL Number	MFCD00011324 MFCD00792839
SMILES	Cl
IUPAC Name	hydrogen chloride
InChI Key	VEXZGXHMUGYJMC-UHFFFAOYSA-N
Molecular Formula	ClH

Ricca Chemical Company Potassium Hydroxide, 0.0100 N (N/100) in Isopropyl Alcohol, Ricca Chemical

CAS: 1310-58-3 Molecular Formula: HKO Molecular Weight (g/mol): 56.11 MDL Number: MFCD00003553 InChI Key: KWYUFKZDYYNOTN-UHFFFAOYSA-M Synonym: potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693 PubChem CID: 14797 ChEBI: CHEBI:32035 IUPAC Name: potassium hydroxide SMILES: [OH-].[K+]

Pricing & Availability
Specifications

PubChem CID	14797
CAS	1310-58-3
Molecular Weight (g/mol)	56.11
ChEBI	CHEBI:32035
MDL Number	MFCD00003553
SMILES	[OH-].[K+]
Synonym	potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693
IUPAC Name	potassium hydroxide
InChI Key	KWYUFKZDYYNOTN-UHFFFAOYSA-M
Molecular Formula	HKO

LabChem, Inc. Buffer Solution pH 7.0 at 25°C, Color Coded Yellow, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	KH₂PO₄
Color	Yellow
Traceability to NIST	Traceable to NIST
Physical Form	Liquid
Chemical Name or Material	Buffer Solution pH 7.0 at 25°C
Grade	Certified
Identification	Passes Test
Name Note	Color Coded Yellow
CAS	1310-73-2
Health Hazard 3	GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention.
Decomposition Information	Phosphorus oxides; Sodium oxide
Health Hazard 2	GHS H Statement Solution is not hazardous.
Solubility Information	Soluble in water
pH	7.00 ±0.01
Recommended Storage	Room Temperature
Formula Weight	136.09
CAS Max %	0.08

Ricca Chemical Company Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, Ricca Chemical

CAS: 7791-13-1 Molecular Formula: Cl2CoH12O6 Molecular Weight (g/mol): 237.92 MDL Number: MFCD00149652 InChI Key: GFHNAMRJFCEERV-UHFFFAOYSA-L IUPAC Name: λ2-cobalt(2+) hexahydrate dichloride SMILES: O.O.O.O.O.O.[Cl-].[Cl-].[Co++]

Pricing & Availability
Specifications

CAS	7791-13-1
Molecular Weight (g/mol)	237.92
MDL Number	MFCD00149652
SMILES	O.O.O.O.O.O.[Cl-].[Cl-].[Co++]
IUPAC Name	λ2-cobalt(2+) hexahydrate dichloride
InChI Key	GFHNAMRJFCEERV-UHFFFAOYSA-L
Molecular Formula	Cl2CoH12O6

Tetrahydrofuran Anhydrous (stabilized with BHT) 99.5+%, TCI America™

CAS: 109-99-9 Molecular Formula: C4H8O Molecular Weight (g/mol): 72.11 MDL Number: MFCD00005356 InChI Key: WYURNTSHIVDZCO-UHFFFAOYSA-N Synonym: tetrahydrofuran,furan, tetrahydro,butylene oxide,furanidine,hydrofuran,tetramethylene oxide,oxacyclopentane,1,4-epoxybutane,tetrahydrofuranne,tetraidrofurano PubChem CID: 8028 ChEBI: CHEBI:26911 IUPAC Name: oxolane SMILES: C1CCOC1

Pricing & Availability
Specifications

PubChem CID	8028
CAS	109-99-9
Molecular Weight (g/mol)	72.11
ChEBI	CHEBI:26911
MDL Number	MFCD00005356
SMILES	C1CCOC1
Synonym	tetrahydrofuran,furan, tetrahydro,butylene oxide,furanidine,hydrofuran,tetramethylene oxide,oxacyclopentane,1,4-epoxybutane,tetrahydrofuranne,tetraidrofurano
IUPAC Name	oxolane
InChI Key	WYURNTSHIVDZCO-UHFFFAOYSA-N
Molecular Formula	C4H8O

Ricca Chemical Company Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical

CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150

Pricing & Availability
Specifications

PubChem CID	61475
CAS	10102-17-7
ChEBI	CHEBI:32150
Synonym	sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate
InChI Key	PODWXQQNRWNDGD-UHFFFAOYSA-L
Molecular Formula	H10Na2O8S2

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Physical Form	Liquid
pH	11
CAS Min %	0.11
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.11

Ricca Chemical Company Buffer, Reference Standard, pH 12.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Colorless
Physical Form	Liquid
CAS Min %	0.08
Chemical Name or Material	Buffer, Reference Standard
Grade	Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Sterility	Non-sterile
Name Note	pH 12.00± 0.01 at 25°C
CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Solubility Information	Miscible
pH	12
DOT Information	Not Regulated by DOT
Shelf Life	18 months
Solution Type	pH Buffer
CAS Max %	0.08
Melting Point	0°C

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Buffers and Standards

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Tris-Glycine-SDS, 10X Solution (Electrophoresis), Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Ricca Chemical Company Color Standard, APHA/Hazen (Platinum-Cobalt), Color = 500, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Fisher Scientific TISAB Concentrate, Fisherbrand Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Potassium Hydroxide, 0.0100 N (N/100) in Isopropyl Alcohol, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

LabChem, Inc. Buffer Solution pH 7.0 at 25°C, Color Coded Yellow, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Ricca Chemical Company Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Tetrahydrofuran Anhydrous (stabilized with BHT) 99.5+%, TCI America™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Buffer, Reference Standard, pH 12.00 ± 0.01 at 25°C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Tris-Glycine-SDS, 10X Solution (Electrophoresis), Fisher BioReagents™

Ricca Chemical Company Color Standard, APHA/Hazen (Platinum-Cobalt), Color = 500, Ricca Chemical

Fisher Scientific TISAB Concentrate, Fisherbrand

Ricca Chemical Company Potassium Hydroxide, 0.0100 N (N/100) in Isopropyl Alcohol, Ricca Chemical

LabChem, Inc. Buffer Solution pH 7.0 at 25°C, Color Coded Yellow, Certified, LabChem™

Ricca Chemical Company Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, Ricca Chemical

Tetrahydrofuran Anhydrous (stabilized with BHT) 99.5+%, TCI America™

Ricca Chemical Company Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical

Ricca Chemical Company Buffer, Reference Standard, pH 12.00 ± 0.01 at 25°C, Ricca Chemical