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 (24,149)

Spectroscopy Standards (5,640)

General Chemistry Solutions (5,062)

Matrix Blanks and Standardization Solutions (4,283)

Life Science Buffers (4,168)

Electrochemistry Buffers (2,348)

Environmental Testing Standards (1,850)

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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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

316 – 330 of 44,631 results

316

Magnesium Sulfate, 2.25% (w/v), Ricca Chemical

CAS: 10034-99-8 Molecular Formula: H14MgO11S Molecular Weight (g/mol): 246.47 MDL Number: MFCD00149785 InChI Key: WRUGWIBCXHJTDG-UHFFFAOYSA-L Synonym: magnesium sulfate heptahydrate,mgso4.7h2o,magnesium sulfate 1:1 heptahydrate,magnesium sulphate heptahydrate,unii-sk47b8698t,magnesium sulfate usan:jan,sulfuric acid magnesium salt 1:1 , heptahydrate,magnesium sulfate heptahydrate mgso4.7h2o,sulfuric acid, magnesium salt 1:1 , heptahydrate,magnesium ii , sulfate, heptahydrate PubChem CID: 24843 ChEBI: CHEBI:31795 IUPAC Name: magnesium(2+) heptahydrate sulfate SMILES: O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	24843
CAS	10034-99-8
Molecular Weight (g/mol)	246.47
ChEBI	CHEBI:31795
MDL Number	MFCD00149785
SMILES	O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O
Synonym	magnesium sulfate heptahydrate,mgso4.7h2o,magnesium sulfate 1:1 heptahydrate,magnesium sulphate heptahydrate,unii-sk47b8698t,magnesium sulfate usan:jan,sulfuric acid magnesium salt 1:1 , heptahydrate,magnesium sulfate heptahydrate mgso4.7h2o,sulfuric acid, magnesium salt 1:1 , heptahydrate,magnesium ii , sulfate, heptahydrate
IUPAC Name	magnesium(2+) heptahydrate sulfate
InChI Key	WRUGWIBCXHJTDG-UHFFFAOYSA-L
Molecular Formula	H14MgO11S

317

Ammonium Carbonate Solution R, 158 g/L, Ricca Chemical

CAS: 506-87-6 Molecular Formula: CH8N2O3 Molecular Weight (g/mol): 96.086 InChI Key: PRKQVKDSMLBJBJ-UHFFFAOYSA-N Synonym: ammonium carbonate,diammonium carbonate,carbonic acid, diammonium salt,ammonia sesquicarbonate,carbonic acid, ammonium salt,caswell no. 042,ammoniumcarbonat german,unii-pdp691cn28,carbonic acid, ammonium salt 1:2,ammoniumcarbonate PubChem CID: 517111 IUPAC Name: diazanium;carbonate SMILES: C(=O)([O-])[O-].[NH4+].[NH4+]

Pricing & Availability
Specifications

PubChem CID	517111
CAS	506-87-6
Molecular Weight (g/mol)	96.086
SMILES	C(=O)([O-])[O-].[NH4+].[NH4+]
Synonym	ammonium carbonate,diammonium carbonate,carbonic acid, diammonium salt,ammonia sesquicarbonate,carbonic acid, ammonium salt,caswell no. 042,ammoniumcarbonat german,unii-pdp691cn28,carbonic acid, ammonium salt 1:2,ammoniumcarbonate
IUPAC Name	diazanium;carbonate
InChI Key	PRKQVKDSMLBJBJ-UHFFFAOYSA-N
Molecular Formula	CH8N2O3

318

Sodium Thiosulfate, 0.0500 N (N/20), Ricca Chemical

CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 Molecular Weight (g/mol): 248.17 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 IUPAC Name: disodium pentahydrate sulfanidesulfonate SMILES: O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	61475
CAS	10102-17-7
Molecular Weight (g/mol)	248.17
ChEBI	CHEBI:32150
SMILES	O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O
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
IUPAC Name	disodium pentahydrate sulfanidesulfonate
InChI Key	PODWXQQNRWNDGD-UHFFFAOYSA-L
Molecular Formula	H10Na2O8S2

319

Buffer, Reference Standard, pH 6.86 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	6.86
CAS Min %	0.33
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.34

320

Ammonia Standard, 1000 ppm NH₃ (822 ppm N), Ricca Chemical

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

321

Potassium Chloride, 3 M, saturated with Silver Chloride, Electrode Filling Solution, Ricca Chemical

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M Synonym: potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs 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+]
Synonym	potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

322

EP Reference Solution Y₇, Yellow Reference Solution, Ricca Chemical

Pricing & Availability

323

Phenol Standard, 1000 ppm C₆H₅OH (0.100% (w/w)), Ricca Chemical

CAS: 108-95-2 Molecular Formula: C6H6O Molecular Weight (g/mol): 94.11 MDL Number: MFCD00002143 InChI Key: ISWSIDIOOBJBQZ-UHFFFAOYSA-N PubChem CID: 996 ChEBI: CHEBI:15882 IUPAC Name: phenol SMILES: OC1=CC=CC=C1

Pricing & Availability
Specifications

PubChem CID	996
CAS	108-95-2
Molecular Weight (g/mol)	94.11
ChEBI	CHEBI:15882
MDL Number	MFCD00002143
SMILES	OC1=CC=CC=C1
IUPAC Name	phenol
InChI Key	ISWSIDIOOBJBQZ-UHFFFAOYSA-N
Molecular Formula	C6H6O

324

Ammonium Molybdate TS, Ricca Chemical

CAS: 7732-18-5

Pricing & Availability
Specifications

CAS	7732-18-5

325

Amine-Sulfuric Acid Reagent, for Sulfide Determination (Methylene Blue Method), Ricca Chemical

Sulfide Determination (Methylene Blue Method)

Pricing & Availability
Specifications

CAS	62778-12-5
Color	Tan to Yellow
Physical Form	Liquid
pH	<3
Packaging	Safety-coated Glass Bottle
CAS Min %	0.34
Chemical Name or Material	Amine-Sulfuric Acid Reagent
Grade	Laboratory
CAS Max %	0.36

326

Hydroxylamine Hydrochloride, 10% (w/w), Ricca Chemical

CAS: 5470-11-1 Molecular Formula: ClH4NO Molecular Weight (g/mol): 69.49 MDL Number: MFCD00051089 InChI Key: WTDHULULXKLSOZ-UHFFFAOYSA-N Synonym: hydroxylamine hydrochloride,hydroxylamine hcl,hydroxylammonium chloride,oxammonium hydrochloride,hydroxylamine, hydrochloride,hydroxyamine hydrochloride,hydroxylamine chloride 1:1,hydroxylamine, hydrochloride 1:1,hydroxyamine hcl,oxammonium hci PubChem CID: 443297 ChEBI: CHEBI:5807 IUPAC Name: hydroxylamine hydrochloride SMILES: Cl.NO

Pricing & Availability
Specifications

PubChem CID	443297
CAS	5470-11-1
Molecular Weight (g/mol)	69.49
ChEBI	CHEBI:5807
MDL Number	MFCD00051089
SMILES	Cl.NO
Synonym	hydroxylamine hydrochloride,hydroxylamine hcl,hydroxylammonium chloride,oxammonium hydrochloride,hydroxylamine, hydrochloride,hydroxyamine hydrochloride,hydroxylamine chloride 1:1,hydroxylamine, hydrochloride 1:1,hydroxyamine hcl,oxammonium hci
IUPAC Name	hydroxylamine hydrochloride
InChI Key	WTDHULULXKLSOZ-UHFFFAOYSA-N
Molecular Formula	ClH4NO

327

Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical

5400 ppm TDS as NaCl

Pricing & Availability
Specifications

Boiling Point	100°C
Type	Conductivity Standard
Name Note	10mS/cm ((10, 000μmho/cm) at 25°C, 5400ppm as NaCl
Concentration or Composition (by Analyte or Components)	5400ppm as NaCl
CAS	7732-18-5
Color	Colorless
Physical Form	Liquid
CAS Min %	0.53
Chemical Name or Material	Conductivity/TDS Standard
Solution Type	Conductivity Standard
CAS Max %	0.55

328

Potassium Chloride Conductivity Standard, 1413 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

329

Thioacetamide TS, 4% (w/v), Ricca Chemical

CAS: 62-55-5 Molecular Formula: C2H5NS Molecular Weight (g/mol): 75.13 MDL Number: MFCD00008070 InChI Key: YUKQRDCYNOVPGJ-UHFFFAOYSA-N Synonym: thioacetamide,acetothioamide,thiacetamide,acetamide, thio,thioacetimidic acid,acetimidic acid, thio,usaf cb-21,usaf ek-1719,rcra waste number u218,acetic acid, thiono-, amide PubChem CID: 2723949 ChEBI: CHEBI:32497 IUPAC Name: ethanethioamide SMILES: CC(N)=S

Pricing & Availability
Specifications

PubChem CID	2723949
CAS	62-55-5
Molecular Weight (g/mol)	75.13
ChEBI	CHEBI:32497
MDL Number	MFCD00008070
SMILES	CC(N)=S
Synonym	thioacetamide,acetothioamide,thiacetamide,acetamide, thio,thioacetimidic acid,acetimidic acid, thio,usaf cb-21,usaf ek-1719,rcra waste number u218,acetic acid, thiono-, amide
IUPAC Name	ethanethioamide
InChI Key	YUKQRDCYNOVPGJ-UHFFFAOYSA-N
Molecular Formula	C2H5NS

330

Conductivity Standard, 20,000 μS/cm (20 mS/cm) at 25°C (11,000 ppm TDS as NaCl), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Molecular Weight (g/mol)	58.44
ChEBI	CHEBI:26710
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Conductivity/TDS Standard
SMILES	[Na+].[Cl-]
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
PubChem CID	5234
Type	Conductivity Standard
Concentration or Composition Notes	11,000ppm as NaCl
CAS	7732-18-5
MDL Number	MFCD00003477
Packaging	Natural Poly Bottle
IUPAC Name	sodium chloride
Molecular Formula	ClNa

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Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical