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 (24,152)

Spectroscopy Standards (5,649)

General Chemistry Solutions (5,062)

Matrix Blanks and Standardization Solutions (4,282)

Life Science Buffers (4,168)

Electrochemistry Buffers (2,348)

Environmental Testing Standards (1,855)

Electrochemistry Standards (1,241)

Karl Fischer Buffers and Reagents (473)

Isotope Standards (387)

Viscosity Standards (260)

Quality Control and Proficiency Samples (183)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (58)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (6)

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Available on GSA/VA Contract (381)
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Production Products (187)
Science Education (212)
Small and Specialty Supplier (18,502)

Grade

AAS (55)
AAS Standard (11)
ACS (55)
ACS Reagent (25)
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 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Bottle (5)
1 Box (1)
1 Ea. (5)

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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 (97)
>8 (1)
<0.5 (3)
<1 (98)

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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 (467)
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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For Use With (Application)

Accurate calibrations and NIST traceability (1)
Accurate calibrations and NIST traceability, laboratory and bench analysis (2)
Accurate calibrations and NIST traceability, portable and field analysis (1)
Accurate pH calibrations and NIST traceability, laboratory and bench analysis (8)
Accurate pH calibrations and NIST traceability, portable and field analysis (6)
Accurate, reproducible pH calibrations (16)
Agarose Gel Electrophoresis, Polyacrylamide Gel Electrophoresis (1)

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Search Within Results

436 – 450 of 44,646 results

436

Buffer solution pH 7.00 (+/-0.024 @ 25oC) No Color Specpure NIST Traceable

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

Pricing & Availability
Specifications

Molecular Weight (g/mol)	35.05
ChEBI	CHEBI:18219
Color	Colorless
Traceability to NIST	Yes
Physical Form	Liquid
Chemical Name or Material	Buffer solution
Grade	Specpure
SMILES	N.O
InChI Key	VHUUQVKOLVNVRT-UHFFFAOYSA-N
PubChem CID	14923
CAS	1336-21-6
MDL Number	MFCD00066650
Solubility Information	pH 7.00 buffers are in solution form. Miscible with water.
TSCA	Yes
Recommended Storage	Ambient temperatures
Molecular Formula	H5NO
Odor	Odorless

437

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

438

Potassium Chloride Conductivity Standard, 5 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+]

Pricing & Availability
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

439

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

440

Sodium chloride, 0.1N Standardized Solution

CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M PubChem CID: 5234 ChEBI: CHEBI:26710 SMILES: [Na+].[Cl-]

Pricing & Availability
Specifications

PubChem CID	5234
CAS	7647-14-5
Molecular Weight (g/mol)	58.44
ChEBI	CHEBI:26710
MDL Number	MFCD00003477
SMILES	[Na+].[Cl-]
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
Molecular Formula	ClNa

441

Ricca Chemical Company Potassium Pyroantimonate Solution R, Ricca Chemical

CAS: 12208-13-8

Pricing & Availability
Specifications

CAS	12208-13-8

442

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Thermo Scientific Chemicals DL-1,4-Dithiothreitol, For Biochemistry, 1M solution in water

CAS: 3483-12-3 | C4H10O2S2 | 154.24 g/mol

Pricing & Availability
Specifications

Color	Colorless
Physical Form	Liquid
Chemical Name or Material	DL-1, 4-Dithiothreitol
Grade	Biochemical
Merck Index	15, 3419
Concentration	0.90 to 1.10M
Density	1.0400g/mL
Name Note	1M Solution in water, For molecular biology
CAS	7732-18-5
Health Hazard 3	GHS P Statement: IF ON SKIN: Wash with plenty of soap and water. 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. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
Health Hazard 2	GHS H Statement: Causes serious eye irritation. Causes skin irritation.
Packaging	Glass bottle
Health Hazard 1	GHS Signal Word: Warning
Formula Weight	154.24
Specific Gravity	1.04

443

Tetrabutylammonium hydroxide, 1M solution in methanol

CAS: 2052-49-5 | C16H37NO | 259.48 g/mol

Pricing & Availability
Specifications

Linear Formula	[CH₃(CH₂)₃]₄NOH
Molecular Weight (g/mol)	259.48
InChI Key	VDZOOKBUILJEDG-UHFFFAOYSA-M
Density	0.9100g/mL
PubChem CID	2723671
Name Note	1M Solutionin Methanol
RTECS Number	BS5425000
Formula Weight	259.46
Melting Point	-98.0°C
Boiling Point	65.0°C
Chemical Name or Material	Tetrabutylammonium hydroxide
SMILES	[OH-].CCCC[N+](CCCC)(CCCC)CCCC
CAS	67-56-1
Health Hazard 3	GHS P Statement: Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Ground/Bond container and receiving equipment. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
MDL Number	MFCD00009425
Health Hazard 2	GHS H Statement: Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled. Causes severe skin burns and eye damage. Causes damage to organs. Highly flammable liquid and vapor.
Flash Point	12°C
Packaging	Plastic bottle
Solubility Information	Solubility in water: soluble.
Health Hazard 1	Danger
Refractive Index	1.3775
Synonym	tetrabutylammonium hydroxide,tetra-n-butylammonium hydroxide,tetrabutylazanium hydroxide,tetrabutylammoniumhydroxide,1-butanaminium, n,n,n-tributyl-, hydroxide,ammonium, tetrabutyl-, hydroxide,n,n,n-tributyl-1-butanaminium hydroxide,tetra n-butyl ammonium hydroxide,tetra-n-butyl ammonium hydroxide,1-butanaminium, n,n,n-tributyl-, hydroxide 1:1
TSCA	TSCA
Molecular Formula	C16H37NO
EINECS Number	218-147-6
Specific Gravity	0.91

444

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

Pricing & Availability
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

445

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FisherTab™ ST-35 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K₂SO₄ + 0.35g Se

Pricing & Availability

446

Conductivity Standard, 1413 μS/cm at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Type	Conductivity Standard
Color	Colorless
pH	6.7 to 7.3
Physical Form	Liquid
Chemical Name or Material	Conductivity Standard
Odor	Odorless
Solution Type	Conductivity Standard

447

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Thermo Scientific Chemicals Bradford Dye Reagent, Ready-to-Use soln.

Suitable for protein concentration determination (100 to 1500μg)

Pricing & Availability
Specifications

Name Note	Ready-to-Use soln.
Health Hazard 3	P234-P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P390-P501c
Health Hazard 2	GHS H Statement H314-H318-H371 Causes severe skin burns and eye damage. Causes serious eye damage. May cause damage to organs.
Color	Blue
Physical Form	Liquid
Solubility Information	Miscible with water.
Health Hazard 1	H290-H302+H332-H314-H335-H371
UN Number	UN1805
DOT Information	Transport Hazard Class: 8; Packing Group: III; Proper Shipping Name: PHOSPHORIC ACID SOLUTION
Chemical Name or Material	Bradford Dye Reagent
TSCA	No
Recommended Storage	Keep cold

448

Cyanide, standard solution, Specpure™ CN∣- 1000μg/mL

Molecular Formula: KCN in 0.1% NaOH MDL Number: MFCD00468042

Pricing & Availability
Specifications

MDL Number	MFCD00468042
Molecular Formula	KCN in 0.1% NaOH

449

Nitrate-Nitrogen Standard for Ion Chromatography, SPEX CertiPrep™

CAS: 7732-18-5

Pricing & Availability
Specifications

CAS	7732-18-5

450

Thermo Scientific Chemicals Phosphate-buffered saline (DPBS, 10X), Dulbecco's formula, without calcium, without magnesium

Pricing & Availability
Specifications

Packaging	Plastic bottle
Physical Form	Liquid
Recommended Storage	Ambient temperatures

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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

Conductivity Standard, 1413 μS/cm at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Nitrate-Nitrogen Standard for Ion Chromatography, SPEX CertiPrep™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

Conductivity Standard, 1413 μS/cm at 25°C, Ricca Chemical

Nitrate-Nitrogen Standard for Ion Chromatography, SPEX CertiPrep™