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 (24,080)

Spectroscopy Standards (5,621)

General Chemistry Solutions (5,055)

Matrix Blanks and Standardization Solutions (4,267)

Life Science Buffers (4,130)

Electrochemistry Buffers (2,333)

Environmental Testing Standards (1,842)

Electrochemistry Standards (1,238)

Karl Fischer Buffers and Reagents (468)

Isotope Standards (379)

Viscosity Standards (253)

Quality Control and Proficiency Samples (183)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (55)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (6)

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Grade

AAS (55)
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ACS (55)
ACS Reagent (25)
ACS/ASTM E 200/AOAC/EPA (7)
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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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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (3)
Buffer (370)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Cleaning, Storage, pH Buffer (15)

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4,396 – 4,410 of 44,423 results

4,396

CERILLIANT™ 6-Acetylmorphine-d3 Solution, 100 μg/mL in Acetonitrile, Sold by MilliporeSigma™ Supelco™

Suitable for quantitation of 6-acetylmorphine (6-MAM) levels in GC/MS or LC/MS testing for clinical toxicology, forensic analysis, urine drug testing, pain prescription monitoring and isotope dilution methods.

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4,397

CERILLIANT™ Morphine-D6 Solution, 100 μg/mL in Methanol, Sold by MilliporeSigma™ Supelco™

Certified reference material

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4,398

CERILLIANT™ Noroxycodone Hydrochloride Solution, 1.0 mg/mL in Methanol (as free base), Sold by MilliporeSigma™ Supelco™

Certified reference material

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4,399

Zinc chloride, 1.0M solution in diethyl ether, AcroSeal™

CAS: 7646-85-7 | Cl2Zn | 136.28 g/mol

Pricing & Availability
Specifications

Linear Formula	ZnCl₂
Molecular Weight (g/mol)	136.28
ChEBI	CHEBI:49976
Color	Blue-Gray or Colorless to Yellow
Physical Form	Solution, May Contain A Small Amount Precipitate
Chemical Name or Material	Zinc chloride
SMILES	Cl[Zn]Cl
Merck Index	15, 10331
Concentration	0.9 to 1.1M
InChI Key	JIAARYAFYJHUJI-UHFFFAOYSA-L
Density	0.8400g/mL
PubChem CID	5727
Name Note	1.0M solution in diethyl ether
Fieser	01,1289; 02,464; 03,338; 05,763; 06,676; 08,536; 09,522; 10,461; 11,602; 12,446; 13,44; 14,177; 15,89; 16,391
CAS	7646-85-7
Health Hazard 3	GHS P Statement 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. Immediately call a POISON CENTER or doctor/physician. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. Avoid breathing dust/fume/gas/mist/vapors/spray. Avoid release to the environment. Ground/Bond container and receiving equipment. Take precautionary measures against static discharge. Store in a well-ventilated place. Keep cool.
MDL Number	MFCD00011295
Health Hazard 2	GHS H Statement Harmful if swallowed. Causes severe skin burns and eye damage. May cause drowsiness or dizziness. Very toxic to aquatic life with long lasting effects. Extremely flammable liquid and vapor. May cause respiratory irritation. May form explosive peroxides. Repeated exposure may cause skin dryness or cracking.
Packaging	AcroSeal™ Glass Bottle
Health Hazard 1	Danger
Synonym	zinc chloride,zinc dichloride,zinc chloride zncl2,zinc butter,zinc chloride fume,zinc ii chloride,zinkchloride,zintrace,zinc chloride, anhydrous,zine dichloride
Recommended Storage	Product can form two phases, which can recombine on cooling
IUPAC Name	dichlorozinc
Molecular Formula	Cl2Zn
Formula Weight	136.29

4,400

Hydrogen chloride, 1M solution in ethyl acetate

CAS: 7647-01-0 | ClH | 36.46 g/mol

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4,401

MP Biomedicals™ 1X Hanks' Balanced Salt Solution (Modified) without Magnesium and Calcium

Minimize cell attachment or aggregation.

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4,402

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Benzyltrimethylammonium hydroxide, 40 wt% solution in methanol

CAS: 100-85-6 Molecular Formula: C10H17NO Molecular Weight (g/mol): 167.252 MDL Number: MFCD00008281 InChI Key: NDKBVBUGCNGSJJ-UHFFFAOYSA-M Synonym: benzyltrimethylammonium hydroxide,triton b,n,n,n-trimethyl-1-phenylmethanaminium hydroxide,trimethylbenzylammonium hydroxide,benzyl trimethylammonium hydroxide,benzyl trimethyl ammonium hydroxide,trimethyl benzylammonium hydroxide,sumquat 2311,benzyltrimetylammonium hydroxide,n,n,n-trimethylbenzenemethanaminium hydroxide PubChem CID: 66854 IUPAC Name: benzyl(trimethyl)azanium;hydroxide SMILES: C[N+](C)(C)CC1=CC=CC=C1.[OH-]

Pricing & Availability
Specifications

PubChem CID	66854
CAS	100-85-6
Molecular Weight (g/mol)	167.252
MDL Number	MFCD00008281
SMILES	C[N+](C)(C)CC1=CC=CC=C1.[OH-]
Synonym	benzyltrimethylammonium hydroxide,triton b,n,n,n-trimethyl-1-phenylmethanaminium hydroxide,trimethylbenzylammonium hydroxide,benzyl trimethylammonium hydroxide,benzyl trimethyl ammonium hydroxide,trimethyl benzylammonium hydroxide,sumquat 2311,benzyltrimetylammonium hydroxide,n,n,n-trimethylbenzenemethanaminium hydroxide
IUPAC Name	benzyl(trimethyl)azanium;hydroxide
InChI Key	NDKBVBUGCNGSJJ-UHFFFAOYSA-M
Molecular Formula	C10H17NO