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 (24,310)

Spectroscopy Standards (5,752)

General Chemistry Solutions (5,095)

Matrix Blanks and Standardization Solutions (4,313)

Life Science Buffers (4,209)

Electrochemistry Buffers (2,364)

Environmental Testing Standards (1,894)

Electrochemistry Standards (1,249)

Karl Fischer Buffers and Reagents (467)

Isotope Standards (380)

Viscosity Standards (258)

Quality Control and Proficiency Samples (184)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (59)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (6)

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Available on GSA/VA Contract (381)
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Grade

AAS (55)
AAS Standard (11)
ACS (55)
ACS Reagent (24)
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 Bottle (5)
1 Box (1)

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Percent Purity

≥ 4400 Units/mg (Nystatin) ≥ 5000 Units/mg (Nystatin) (1) (8)
≥ 85.0 % (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)

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pH

≥12 to ≤14 (6)
>11.5 (1)
>12 (44)
>13 (100)
>8 (1)
<0.5 (3)
<1 (99)

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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 (30)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (17)

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Technique

AA (469)
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 (373)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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Search Within Results

76 – 90 of 45,034 results

Ammonia (as Nitrogen) Standard, Certified, 1000ppm ±10ppm (1mL = 1mg N, 1mL = 1.22mg NH₃), LabChem™

CAS: 12125-02-9 Molecular Formula: ClH4N Molecular Weight (g/mol): 53.49 MDL Number: MFCD00011420 InChI Key: NLXLAEXVIDQMFP-UHFFFAOYSA-N PubChem CID: 25517 ChEBI: CHEBI:31206 IUPAC Name: amine hydrochloride SMILES: N.Cl

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Specifications

PubChem CID	25517
CAS	12125-02-9
Molecular Weight (g/mol)	53.49
ChEBI	CHEBI:31206
MDL Number	MFCD00011420
SMILES	N.Cl
IUPAC Name	amine hydrochloride
InChI Key	NLXLAEXVIDQMFP-UHFFFAOYSA-N
Molecular Formula	ClH4N

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

Ideal for native running conditions with NuPAGE Tris-Acetate gels

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TISAB II, For Fluoride, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	CH₃COOH
Color	Colorless
Physical Form	Liquid
Traceability to NIST	Traceable to NIST
Chemical Name or Material	TISAB II
Identification	Passes Test
Grade	Certified
Name Note	For Fluoride
CAS	125572-95-4
Decomposition Information	Carbon monoxide; Carbon dioxide
Health Hazard 2	GHS H Statement Causes skin irritation. Causes serious eye irritation.
pH	5.3 to 5.5
Solubility Information	Soluble in water
Health Hazard 1	Warning
Recommended Storage	Room Temperature
Formula Weight	60.05
CAS Max %	0.4

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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Invitrogen™ TE, pH 7.0, RNase-free

Invitrogen TE buffer is a commonly recommended storage solution for RNA samples. 10 mM Tris-HCl, 1 mM EDTA, pH 7.0 is in nuclease-free, ultrapure water.

Pricing & Availability
Specifications

Packaging	Bottle
Physical Form	Liquid
pH	7.0
Recommended Storage	Store at room temperature.
Product Line	Ambion

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

Potassium Permanganate, 0.100 N (N/10), 0.0200 M (M/50), Ricca Tightrant™

CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N Synonym: potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]

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Specifications

PubChem CID	516875
CAS	7722-64-7
Molecular Weight (g/mol)	158.032
SMILES	[O-][Mn](=O)(=O)=O.[K+]
Synonym	potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo
IUPAC Name	potassium;permanganate
InChI Key	VZJVWSHVAAUDKD-UHFFFAOYSA-N
Molecular Formula	KMnO4

Corning™ Molecular Biology Reagents

Used in molecular biology, nucleic acid purification applications

Pricing & Availability
Specifications

Quantity	6 x 1 L

Lanthanum Nitrate TS, Ricca Chemical

CAS: 10277-43-7 Molecular Formula: H12LaN3O15 Molecular Weight (g/mol): 433.01 MDL Number: MFCD00149751 InChI Key: GJKFIJKSBFYMQK-UHFFFAOYSA-N PubChem CID: 16211478 IUPAC Name: lanthanum(3+) hexahydrate trinitrate SMILES: O.O.O.O.O.O.[La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	16211478
CAS	10277-43-7
Molecular Weight (g/mol)	433.01
MDL Number	MFCD00149751
SMILES	O.O.O.O.O.O.[La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O
IUPAC Name	lanthanum(3+) hexahydrate trinitrate
InChI Key	GJKFIJKSBFYMQK-UHFFFAOYSA-N
Molecular Formula	H12LaN3O15

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ChromaCare™ LC-MS Instrument Flush Solution

ChromaCare™ LC-MS Instrument Flush Solution is designed to prepare LC/MS instruments for start-up. By reducing background noise, this solution facilitates instrument installation and preventative maintenance routines. ∣ CAS: 75-05-8; 67-56-1; 67-63-0; 7732-18-5

Pricing & Availability
Specifications

Percent Purity	25% Acetonitrile, 25% Methanol, 25% Water, 25% 2-Propanol (IPA)
CAS	75-05-8; 67-56-1; 67-63-0; 7732-18-5
Color	Colorless
Physical Form	Liquid
Grade	LC-MS

Potassium Chloride Conductivity Standard, 1000 μS/cm at 25°C, Ricca Chemical

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]

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Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

Linear Formula	KHC₈H₄O₄
CAS	7447-40-7
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.
Health Hazard 2	GHS H Statement Solution is not hazardous.
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Electrode Storage Solution
Recommended Storage	Room Temperature
Formula Weight	204.23
CAS Max %	0.6

Calcium Carbonate Standard , (1mL = 1mg CaCO₃ = 0.4mg Ca), for Hardness, Certified, 1.000 ±0.010mg CaCO₃/mL, LabChem™

CAS: 471-34-1 Molecular Formula: CCaO3 Molecular Weight (g/mol): 100.09 MDL Number: MFCD00010906 InChI Key: VTYYLEPIZMXCLO-UHFFFAOYSA-L PubChem CID: 10112 ChEBI: CHEBI:3311 IUPAC Name: calcium carbonate SMILES: [Ca++].[O-]C([O-])=O

Pricing & Availability
Specifications

PubChem CID	10112
CAS	471-34-1
Molecular Weight (g/mol)	100.09
ChEBI	CHEBI:3311
MDL Number	MFCD00010906
SMILES	[Ca++].[O-]C([O-])=O
IUPAC Name	calcium carbonate
InChI Key	VTYYLEPIZMXCLO-UHFFFAOYSA-L
Molecular Formula	CCaO3

Thermo Scientific Chemicals TRIS-buffered saline (TBS, 20X) pH 7.4

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00132476 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00132476
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

Phosphate (as Phosphorus) Standard, (1mL = 1mg P), Certified, 1000ppm ±10ppm, LabChem™

CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 MDL Number: MFCD00011401 MFCD00147253 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M PubChem CID: 516951 ChEBI: CHEBI:63036 IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

Pricing & Availability
Specifications

PubChem CID	516951
CAS	7778-77-0
Molecular Weight (g/mol)	136.08
ChEBI	CHEBI:63036
MDL Number	MFCD00011401 MFCD00147253
SMILES	[K+].OP(O)([O-])=O
IUPAC Name	potassium dihydrogen phosphate
InChI Key	GNSKLFRGEWLPPA-UHFFFAOYSA-M
Molecular Formula	H2KO4P

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Buffers and Standards

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Ammonia (as Nitrogen) Standard, Certified, 1000ppm ±10ppm (1mL = 1mg N, 1mL = 1.22mg NH3), LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

ChromaCare™ LC-MS Instrument Flush Solution Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Potassium Chloride Conductivity Standard, 1000 μS/cm at 25°C, Ricca Chemical GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Phosphate (as Phosphorus) Standard, (1mL = 1mg P), Certified, 1000ppm ±10ppm, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Ammonia (as Nitrogen) Standard, Certified, 1000ppm ±10ppm (1mL = 1mg N, 1mL = 1.22mg NH₃), LabChem™

ChromaCare™ LC-MS Instrument Flush Solution

Potassium Chloride Conductivity Standard, 1000 μS/cm at 25°C, Ricca Chemical

Phosphate (as Phosphorus) Standard, (1mL = 1mg P), Certified, 1000ppm ±10ppm, LabChem™