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 (22,754)

Spectroscopy Standards (5,983)

General Chemistry Solutions (5,246)

Matrix Blanks and Standardization Solutions (4,367)

Life Science Buffers (3,916)

Electrochemistry Buffers (2,316)

Environmental Testing Standards (1,935)

Electrochemistry Standards (1,221)

Karl Fischer Buffers and Reagents (478)

Isotope Standards (300)

Viscosity Standards (257)

Quality Control and Proficiency Samples (205)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (60)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (4)

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Science Education (219)
Small and Specialty Supplier (8,921)

Grade

AAS (56)
AAS Standard (11)
ACS (59)
ACS Reagent (26)
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 Box (1)
1 Ea. (4)

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Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)
≥49% (2)
≥50% (3)

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pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (3)
>12 (44)
>13 (104)
>8 (1)
<0.5 (3)

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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 (26)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Crystalline (17)
Crystalline Powder (143)

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Technique

AA (472)
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 (433)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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286 – 300 of 43,630 results

286

Ricca Chemical Company Fluoride Standard, 100 ppm F^-, Ricca Chemical

CAS: 7681-49-4 Molecular Formula: FNa Molecular Weight (g/mol): 41.99 MDL Number: MFCD00003524 InChI Key: PUZPDOWCWNUUKD-UHFFFAOYSA-M PubChem CID: 5235 ChEBI: CHEBI:28741 IUPAC Name: sodium fluoride SMILES: [F-].[Na+]

Pricing & Availability
Specifications

PubChem CID	5235
CAS	7681-49-4
Molecular Weight (g/mol)	41.99
ChEBI	CHEBI:28741
MDL Number	MFCD00003524
SMILES	[F-].[Na+]
IUPAC Name	sodium fluoride
InChI Key	PUZPDOWCWNUUKD-UHFFFAOYSA-M
Molecular Formula	FNa

287

Ricca Chemical Company 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

288

Ricca Chemical Company Phosphorus Standard, 1000 ppm P, 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

289

Ricca Chemical Company 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

290

Ricca Chemical Company Turbidity Standard, 1000 NTU, Formazin, Ricca Chemical

CAS: 100-97-0 Molecular Formula: C6H12N4 Molecular Weight (g/mol): 140.19 InChI Key: VKYKSIONXSXAKP-UHFFFAOYSA-N PubChem CID: 4101 ChEBI: CHEBI:6824 SMILES: C1N2CN3CN1CN(C2)C3

Pricing & Availability
Specifications

PubChem CID	4101
CAS	100-97-0
Molecular Weight (g/mol)	140.19
ChEBI	CHEBI:6824
SMILES	C1N2CN3CN1CN(C2)C3
InChI Key	VKYKSIONXSXAKP-UHFFFAOYSA-N
Molecular Formula	C6H12N4

291

Ricca Chemical Company Buffer, Reference Standard, pH 7.00 ± 0.01 at 25°C (Color Coded Green), Ricca Chemical

Pricing & Availability
Specifications

CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Color	Green
Physical Form	Liquid
pH	7
Concentration	1X
Shelf Life	24 months
For Use With (Application)	Calibration
Solution Type	Colored pH Buffer
CAS Max %	0.5

292

Ricca Chemical Company 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

293

Ricca Chemical Company 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

294

Ricca Chemical Company Ammonia R (175 g/L NH₃), Ricca Chemical

CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 MDL Number: MFCD00066650 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N Synonym: ammonium hydroxide,ammonia water,ammonia aqueous,aquammonia,aqua ammonia,ammonia, aqua,household ammonia,ammonium hydroxide solution,ammonia, monohydrate,ammonium hydroxide nh4 oh PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: amine hydrate SMILES: N.O

Pricing & Availability
Specifications

PubChem CID	14923
CAS	1336-21-6
Molecular Weight (g/mol)	35.05
ChEBI	CHEBI:18219
MDL Number	MFCD00066650
SMILES	N.O
Synonym	ammonium hydroxide,ammonia water,ammonia aqueous,aquammonia,aqua ammonia,ammonia, aqua,household ammonia,ammonium hydroxide solution,ammonia, monohydrate,ammonium hydroxide nh4 oh
IUPAC Name	amine hydrate
InChI Key	VHUUQVKOLVNVRT-UHFFFAOYSA-N
Molecular Formula	H5NO

295

Ricca Chemical Company 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

296

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Physical Form	Liquid
pH	11
CAS Min %	0.11
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.11

297

Ricca Chemical Company Silver Nitrate, 0.100 N (N/10), Ricca Chemical

CAS: 7761-88-8 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
CAS	7761-88-8
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

298

Ricca Chemical Company Iodine (Iodine-Iodide), 0.0100 N (N/100), 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

299

Ricca Chemical Company Sodium Thiosulfate, 0.0100 N (N/100), 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

300

Ricca Chemical Company EP Reference Solution Y₇, Yellow Reference Solution, Ricca Chemical

Pricing & Availability

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Buffers and Standards

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Ricca Chemical Company Ammonia Standard, 1000 ppm NH3 (822 ppm N), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Phosphorus Standard, 1000 ppm P, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Buffer, Reference Standard, pH 6.86 ± 0.01 at 25°C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Turbidity Standard, 1000 NTU, Formazin, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Buffer, Reference Standard, pH 7.00 ± 0.01 at 25°C (Color Coded Green), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Hydroxylamine Hydrochloride, 10% (w/w), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Magnesium Sulfate, 2.25% (w/v), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Ammonia R (175 g/L NH3), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Conductivity Standard, 20,000 μS/cm (20 mS/cm) at 25°C (11,000 ppm TDS as NaCl), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Silver Nitrate, 0.100 N (N/10), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Iodine (Iodine-Iodide), 0.0100 N (N/100), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Sodium Thiosulfate, 0.0100 N (N/100), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company EP Reference Solution Y7, Yellow Reference Solution, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

Ricca Chemical Company Phosphorus Standard, 1000 ppm P, Ricca Chemical

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

Ricca Chemical Company Turbidity Standard, 1000 NTU, Formazin, Ricca Chemical

Ricca Chemical Company Buffer, Reference Standard, pH 7.00 ± 0.01 at 25°C (Color Coded Green), Ricca Chemical

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

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

Ricca Chemical Company Ammonia R (175 g/L NH₃), Ricca Chemical

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

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical

Ricca Chemical Company Silver Nitrate, 0.100 N (N/10), Ricca Chemical

Ricca Chemical Company Iodine (Iodine-Iodide), 0.0100 N (N/100), Ricca Chemical

Ricca Chemical Company Sodium Thiosulfate, 0.0100 N (N/100), Ricca Chemical

Ricca Chemical Company EP Reference Solution Y₇, Yellow Reference Solution, Ricca Chemical