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 (23,946)

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General Chemistry Solutions (5,023)

Matrix Blanks and Standardization Solutions (4,270)

Life Science Buffers (4,123)

Electrochemistry Buffers (2,333)

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Karl Fischer Buffers and Reagents (467)

Isotope Standards (376)

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Quality Control and Proficiency Samples (206)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (57)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (6)

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Grade

AAS (66)
ACS (194)
ACS Reagent (25)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)
APHA/Hazen (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 (97)

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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 (37)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (22)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (3)
Buffer (588)
Buffer, Storage (4)
Calibration (8)
Cleaning, Storage, pH Buffer (15)
Colored pH Buffer (43)

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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 (15)
Agarose Gel Electrophoresis, Polyacrylamide Gel Electrophoresis (10)

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316 – 330 of 44,341 results

316

Thermo Scientific Chemicals Sodium phosphate, 0.5M buffer soln., pH 7.0

Pricing & Availability
Specifications

MDL Number	MFCD00146206
Solubility Information	Fully miscible.
Physical Form	Liquid
pH	7.0
Chemical Name or Material	Sodium phosphate buffer soln.
TSCA	Yes
Recommended Storage	Ambient temperatures
Concentration	0.5 M

317

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

318

Sodium hydroxide, 0.1N Standardized Solution

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 MDL Number: MFCD00003548 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

Pricing & Availability
Specifications

PubChem CID	14798
CAS	1310-73-2
Molecular Weight (g/mol)	39.997
ChEBI	CHEBI:32145
MDL Number	MFCD00003548
SMILES	[OH-].[Na+]
IUPAC Name	sodium;hydroxide
InChI Key	HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula	HNaO

319

Potassium hydroxide, 0.1N Standardized Solution in methanol

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+]

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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

320

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

CAS: 77-86-1

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

321

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

322

Standard, Water, 0.01%, Apura™, MilliporeSigma™

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323

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

324

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Iodine solution, according to Wijs, 0.1 mol ICl/l

CAS: 7790-99-0 Molecular Formula: ClI Molecular Weight (g/mol): 162.35 MDL Number: MFCD00011354 InChI Key: QZRGKCOWNLSUDK-UHFFFAOYSA-N Synonym: iodine monochloride,iodine chloride,iodochlorine,iodine chloride icl,chloroiodide,wijs' chloride,iodinemonochloride,chlorine iodide,unii-0smg5nlu45,protochlorure d'iode french PubChem CID: 24640 IUPAC Name: iodochlorane SMILES: ClI

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Specifications

PubChem CID	24640
CAS	7790-99-0
Molecular Weight (g/mol)	162.35
MDL Number	MFCD00011354
SMILES	ClI
Synonym	iodine monochloride,iodine chloride,iodochlorine,iodine chloride icl,chloroiodide,wijs' chloride,iodinemonochloride,chlorine iodide,unii-0smg5nlu45,protochlorure d'iode french
IUPAC Name	iodochlorane
InChI Key	QZRGKCOWNLSUDK-UHFFFAOYSA-N
Molecular Formula	ClI

325

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

Pricing & Availability
Specifications

Color	Undesignated
Physical Form	Liquid
Chemical Name or Material	Tris-Glycine
Grade	Electrophoresis
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)	Components: Tris (2-3%) and Glycine (13-14%). 0.25M Tris Base and 1.92M Glycine.
CAS	56-40-6
Protease	Protease free
Synonym	TG
Purity Grade Notes	DNase-, RNase- and Protease-Free
Recommended Storage	RT

326

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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

327

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

328

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Thermo Scientific Chemicals HEPES, 99%

CAS: 7365-45-9 Molecular Formula: C8H18N2O4S Molecular Weight (g/mol): 238.30 MDL Number: MFCD00006158 InChI Key: JKMHFZQWWAIEOD-UHFFFAOYSA-N Synonym: 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid PubChem CID: 23831 ChEBI: CHEBI:42334 IUPAC Name: 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid SMILES: OCCN1CCN(CCS(O)(=O)=O)CC1

Pricing & Availability
Specifications

PubChem CID	23831
CAS	7365-45-9
Molecular Weight (g/mol)	238.30
ChEBI	CHEBI:42334
MDL Number	MFCD00006158
SMILES	OCCN1CCN(CCS(O)(=O)=O)CC1
Synonym	4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid
IUPAC Name	2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid
InChI Key	JKMHFZQWWAIEOD-UHFFFAOYSA-N
Molecular Formula	C8H18N2O4S

329

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Lithium diisopropylamide, 2M sol. in THF/n-heptane/ethylbenzene, AcroSeal™

CAS: 4111-54-0 Molecular Formula: C6H14LiN Molecular Weight (g/mol): 107.125 MDL Number: MFCD00064449 InChI Key: ZCSHNCUQKCANBX-UHFFFAOYSA-N Synonym: lithium diisopropylamide,unii-ol028kiw1i,lithium di-isopropylamide,lithium diisopropyl amide,2-propanamine, n-1-methylethyl-, lithium salt,ol028kiw1i,lithium di propan-2-yl azanide,2-propanamine, n-1-methylethyl-, lithium salt 1:1,lithium n,n-diisopropylamide,ipr2nli PubChem CID: 2724682 IUPAC Name: lithium;di(propan-2-yl)azanide SMILES: [Li+].CC(C)[N-]C(C)C

Pricing & Availability
Specifications

PubChem CID	2724682
CAS	4111-54-0
Molecular Weight (g/mol)	107.125
MDL Number	MFCD00064449
SMILES	[Li+].CC(C)[N-]C(C)C
Synonym	lithium diisopropylamide,unii-ol028kiw1i,lithium di-isopropylamide,lithium diisopropyl amide,2-propanamine, n-1-methylethyl-, lithium salt,ol028kiw1i,lithium di propan-2-yl azanide,2-propanamine, n-1-methylethyl-, lithium salt 1:1,lithium n,n-diisopropylamide,ipr2nli
IUPAC Name	lithium;di(propan-2-yl)azanide
InChI Key	ZCSHNCUQKCANBX-UHFFFAOYSA-N
Molecular Formula	C6H14LiN

330

Total Organic Carbon (TOC), standard solution, Specpure™ 1000μg/mL

KHC₈H₄O₄ in H₂O

Pricing & Availability
Specifications

Name Note	1000μg/mL
Solubility	Miscible with water
Color	Colorless
MDL Number	MFCD00133992
Physical Form	Liquid
Chemical Name or Material	Total Organic Carbon
TSCA	Yes
Recommended Storage	Ambient temperatures
Molecular Formula	KHC₈H₄O₄ in H₂O
Odor	Characteristic

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

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

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

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