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

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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)
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100.15 (1)

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0.1 mol (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 (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)
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15% HCl (3)
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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)
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AA (467)
Acidimetry (3)
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For Use With (Application)

Accurate calibrations and NIST traceability (1)
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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

346 – 360 of 44,631 results

346

Cyanide Standard, 1000 ppm CN^-, Ricca Chemical

CAS: 151-50-8 Molecular Formula: CKN Molecular Weight (g/mol): 65.116 InChI Key: NNFCIKHAZHQZJG-UHFFFAOYSA-N PubChem CID: 9032 IUPAC Name: potassium;cyanide SMILES: [C-]#N.[K+]

Pricing & Availability
Specifications

PubChem CID	9032
CAS	151-50-8
Molecular Weight (g/mol)	65.116
SMILES	[C-]#N.[K+]
IUPAC Name	potassium;cyanide
InChI Key	NNFCIKHAZHQZJG-UHFFFAOYSA-N
Molecular Formula	CKN

347

Silver Nitrate, 0.0100 N (N/100), Ricca Chemical

Molecular Formula: AgNO3 Molecular Weight (g/mol): 169.87 MDL Number: MFCD00003414 InChI Key: SQGYOTSLMSWVJD-UHFFFAOYSA-N Synonym: silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol PubChem CID: 24470 ChEBI: CHEBI:32130 IUPAC Name: silver(1+) nitrate SMILES: [Ag+].[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	24470
Molecular Weight (g/mol)	169.87
ChEBI	CHEBI:32130
MDL Number	MFCD00003414
SMILES	[Ag+].[O-][N+]([O-])=O
Synonym	silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol
IUPAC Name	silver(1+) nitrate
InChI Key	SQGYOTSLMSWVJD-UHFFFAOYSA-N
Molecular Formula	AgNO3

348

Phosphate Phosphorus Standard, 100 ppm P (306.6 ppm PO₄³^-), Ricca Chemical

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

349

Ammonium Chloride-EDTA Solution, Ricca Chemical

CAS: 12125-02-9 Molecular Formula: ClH4N Molecular Weight (g/mol): 53.49 MDL Number: MFCD00011420 InChI Key: NLXLAEXVIDQMFP-UHFFFAOYSA-N Synonym: ammonium chloride,salmiac,sal ammoniac,ammonium muriate,ammoniumchlorid,ammoneric,darammon,amchlor,ammonium chloride nh4 cl,ammoniumklorid 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
Synonym	ammonium chloride,salmiac,sal ammoniac,ammonium muriate,ammoniumchlorid,ammoneric,darammon,amchlor,ammonium chloride nh4 cl,ammoniumklorid
IUPAC Name	amine hydrochloride
InChI Key	NLXLAEXVIDQMFP-UHFFFAOYSA-N
Molecular Formula	ClH4N

350

Bromide Standard, 1000 ppm Br^-, Ricca Chemical

CAS: 7647-15-6 Molecular Formula: BrNa Molecular Weight (g/mol): 102.89 MDL Number: MFCD00003475 InChI Key: JHJLBTNAGRQEKS-UHFFFAOYSA-M PubChem CID: 253881 ChEBI: CHEBI:63004 IUPAC Name: sodium bromide SMILES: [Na+].[Br-]

Pricing & Availability
Specifications

PubChem CID	253881
CAS	7647-15-6
Molecular Weight (g/mol)	102.89
ChEBI	CHEBI:63004
MDL Number	MFCD00003475
SMILES	[Na+].[Br-]
IUPAC Name	sodium bromide
InChI Key	JHJLBTNAGRQEKS-UHFFFAOYSA-M
Molecular Formula	BrNa

351

Chloride Standard, 1000 ppm Cl^- (0.0282 N), Ricca Chemical

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 IUPAC Name: sodium chloride 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-]
IUPAC Name	sodium chloride
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
Molecular Formula	ClNa

352

Sodium Hydroxide, 5.00 N, Ricca Chemical

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic 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
SMILES	[OH-].[Na+]
Synonym	sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic
IUPAC Name	sodium;hydroxide
InChI Key	HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula	HNaO

353

Color Standard, APHA/Hazen (Platinum-Cobalt), Color = 50, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Name Note	Color = 50
CAS	7732-18-5
Color	Brown/Yellow to Yellow
Physical Form	Liquid
CAS Min %	0.01
Packaging	Amber Glass Bottle
Chemical Name or Material	Color Standard
Methods	APHA / Hazen (Platinum-Cobalt)
CAS Max %	0.01

354

Ferrous Ammonium Sulfate, 0.00282 N (0.00282 M), 1 mL = 0.1 mg Cl₂, Ricca Chemical

CAS: 7783-85-9 Molecular Formula: FeH20N2O14S2 Molecular Weight (g/mol): 392.13 MDL Number: MFCD00150530 InChI Key: MQLVWQSVRZVNIP-UHFFFAOYSA-L IUPAC Name: λ2-iron(2+) diammonium hexahydrate disulfate SMILES: [NH4+].[NH4+].O.O.O.O.O.O.[Fe++].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O

Pricing & Availability
Specifications

CAS	7783-85-9
Molecular Weight (g/mol)	392.13
MDL Number	MFCD00150530
SMILES	[NH4+].[NH4+].O.O.O.O.O.O.[Fe++].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
IUPAC Name	λ2-iron(2+) diammonium hexahydrate disulfate
InChI Key	MQLVWQSVRZVNIP-UHFFFAOYSA-L
Molecular Formula	FeH20N2O14S2

355

Iron AA Standard, 1000 ppm Fe in 3% HCl, Ricca Chemical

CAS: 7439-89-6 Molecular Formula: Fe Molecular Weight (g/mol): 55.85 MDL Number: MFCD00010999 InChI Key: XEEYBQQBJWHFJM-UHFFFAOYSA-N PubChem CID: 23925 ChEBI: CHEBI:82664 IUPAC Name: iron SMILES: [Fe]

Pricing & Availability
Specifications

PubChem CID	23925
CAS	7439-89-6
Molecular Weight (g/mol)	55.85
ChEBI	CHEBI:82664
MDL Number	MFCD00010999
SMILES	[Fe]
IUPAC Name	iron
InChI Key	XEEYBQQBJWHFJM-UHFFFAOYSA-N
Molecular Formula	Fe

356

Doctor Solution (Sodium Plumbite), Ricca Chemical

Pricing & Availability
Specifications

Name Note	Sodium Plumbite
CAS	1317-36-8
Color	Orange
pH	>12
CAS Min %	1.67
Chemical Name or Material	Doctor Solution
Grade	Laboratory
Synonym	dihydrogen oxide,dihydrogen monoxide
CAS Max %	1.74

357

Iodine (Iodine-Iodide), 0.100 N (N/10), Ricca Chemical

CAS: 7553-56-2 Molecular Formula: I2 Molecular Weight (g/mol): 253.81 MDL Number: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Synonym: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: diiodine SMILES: II

Pricing & Availability
Specifications

PubChem CID	807
CAS	7553-56-2
Molecular Weight (g/mol)	253.81
ChEBI	CHEBI:17606
MDL Number	MFCD00011355 MFCD00164163
SMILES	II
Synonym	iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode
IUPAC Name	diiodine
InChI Key	PNDPGZBMCMUPRI-UHFFFAOYSA-N
Molecular Formula	I2

358

tert-Butyl Alcohol 99.0+%, TCI America™

CAS: 75-65-0 Molecular Formula: C4H10O Molecular Weight (g/mol): 74.123 MDL Number: MFCD00004464 InChI Key: DKGAVHZHDRPRBM-UHFFFAOYSA-N Synonym: tert-butanol,tert-butyl alcohol,2-methyl-2-propanol,t-butanol,t-butyl hydroxide,1,1-dimethylethanol,trimethylcarbinol,trimethyl methanol,2-propanol, 2-methyl,t-butyl alcohol PubChem CID: 6386 ChEBI: CHEBI:45895 IUPAC Name: 2-methylpropan-2-ol SMILES: CC(C)(C)O

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Specifications

PubChem CID	6386
CAS	75-65-0
Molecular Weight (g/mol)	74.123
ChEBI	CHEBI:45895
MDL Number	MFCD00004464
SMILES	CC(C)(C)O
Synonym	tert-butanol,tert-butyl alcohol,2-methyl-2-propanol,t-butanol,t-butyl hydroxide,1,1-dimethylethanol,trimethylcarbinol,trimethyl methanol,2-propanol, 2-methyl,t-butyl alcohol
IUPAC Name	2-methylpropan-2-ol
InChI Key	DKGAVHZHDRPRBM-UHFFFAOYSA-N
Molecular Formula	C4H10O

359

Potassium Chloride Conductivity Standard, 50 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

360

EDTA Titrant, 0.100 M (M/10), Ricca Chemical

CAS: 6381-92-6 Molecular Formula: C10H18N2Na2O10 Molecular Weight (g/mol): 372.24 MDL Number: MFCD00150037,MFCD00003541 InChI Key: OVBJJZOQPCKUOR-UHFFFAOYSA-L Synonym: edta disodium salt,cal-ex decalcifier,buffer solution, ph 10.00,sodium di ethylenediamine tetraacetate dihydrate,ethylenediamine tetraacetic acid, disodium salt dihydrate,ethylenediamine tetraacetic acid, disodium salt, standard solution,sodium di ethylenediamine tetraacetate standard solution,ethylenedinitrilo tetraacetic acid disodium, dihydrate, reagent, acs PubChem CID: 44120005 IUPAC Name: disodium 2-({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate SMILES: O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O

Pricing & Availability
Specifications

PubChem CID	44120005
CAS	6381-92-6
Molecular Weight (g/mol)	372.24
MDL Number	MFCD00150037,MFCD00003541
SMILES	O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O
Synonym	edta disodium salt,cal-ex decalcifier,buffer solution, ph 10.00,sodium di ethylenediamine tetraacetate dihydrate,ethylenediamine tetraacetic acid, disodium salt dihydrate,ethylenediamine tetraacetic acid, disodium salt, standard solution,sodium di ethylenediamine tetraacetate standard solution,ethylenedinitrilo tetraacetic acid disodium, dihydrate, reagent, acs
IUPAC Name	disodium 2-({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate
InChI Key	OVBJJZOQPCKUOR-UHFFFAOYSA-L
Molecular Formula	C10H18N2Na2O10

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Buffers and Standards

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Potassium Chloride Conductivity Standard, 50 μS/cm at 25°C, Ricca Chemical GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Potassium Chloride Conductivity Standard, 50 μS/cm at 25°C, Ricca Chemical