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 (12,796)

Spectroscopy Standards (3,251)

Matrix Blanks and Standardization Solutions (1,900)

Life Science Buffers (1,003)

Electrochemistry Buffers (971)

General Chemistry Solutions (761)

Environmental Testing Standards (447)

Electrochemistry Standards (352)

Viscosity Standards (258)

Karl Fischer Buffers and Reagents (255)

Isotope Standards (98)

Quality Control and Proficiency Samples (29)

Osmolality Standards (18)

Kjeldahl Buffers and Reagents (11)

Matrix Modifiers (10)

1 – 15 di 16,377 risultati

Promozioni disponibili

Thermo Scientific™ Flaconi di tampone pH Orion™

Esecuzione di calibrazioni del pH accurate e riproducibili con flaconi di tampone pH Thermo Scientific™ Orion™ codificati a colori.

Prezzi e disponibilità
Specifiche

Tracciabilità a NIST	Sì
Da utilizzare con (apparecchiatura)	pH Meter and Electrode
Forma fisica	Liquid
Materiale o nome chimico	pH Buffer, bottles

Promozioni disponibili

Buffer Solution pH4.00 (Phthalate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

Numero MDL: 217672

Prezzi e disponibilità
Specifiche

Numero MDL	217672

Promozioni disponibili

pH Buffers, Twin Neck, Fisherbrand™

Perform accurate pH calibrations with color-coded, twin neck Fisherbrand™ pH Buffer Bottles.

Prezzi e disponibilità
Specifiche

Da utilizzare con (applicazione)	pH calibration

Promozioni disponibili

Buffer Solution pH7.00 (Phosphate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

Numero MDL: 217672

Prezzi e disponibilità
Specifiche

Numero MDL	217672

Promozioni disponibili

Buffer Colour Coded Solution pH7.00 (Phosphate) Yellow, NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

CAS: 7778-77-0 Formula molecolare: H2KO4P Molecular Weight (g/mol): 136.08 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

Prezzi e disponibilità
Specifiche

Formula molecolare	H2KO4P
CAS	7778-77-0
Molecular Weight (g/mol)	136.08
SMILES	[K+].OP(O)([O-])=O
IUPAC Name	potassium dihydrogen phosphate
InChI Key	GNSKLFRGEWLPPA-UHFFFAOYSA-M

Thermo Scientific Alfa Aesar Oxalic acid, 10% w/v aq. soln.

CAS: 144-62-7 Formula molecolare: C2H2O4 Molecular Weight (g/mol): 90.034 Numero MDL: MFCD00002573 InChI Key: MUBZPKHOEPUJKR-UHFFFAOYSA-N PubChem CID: 971 ChEBI: CHEBI:16995 IUPAC Name: oxalic acid SMILES: C(=O)(C(=O)O)O

Prezzi e disponibilità
Specifiche

Numero MDL	MFCD00002573
PubChem CID	971
Formula molecolare	C2H2O4
CAS	144-62-7
Molecular Weight (g/mol)	90.034
ChEBI	CHEBI:16995
SMILES	C(=O)(C(=O)O)O
IUPAC Name	oxalic acid
InChI Key	MUBZPKHOEPUJKR-UHFFFAOYSA-N

Thermo Scientific Alfa Aesar Manganese, AAS standard solution, Specpure™ Mn 1000μg/mL

CAS: 7439-96-5 Formula molecolare: Mn Molecular Weight (g/mol): 54.94 Numero MDL: MFCD00011111 InChI Key: PWHULOQIROXLJO-UHFFFAOYSA-N PubChem CID: 23930 ChEBI: CHEBI:35154 IUPAC Name: manganese SMILES: [Mn]

Prezzi e disponibilità
Specifiche

Numero MDL	MFCD00011111
PubChem CID	23930
Formula molecolare	Mn
CAS	7439-96-5
Molecular Weight (g/mol)	54.94
ChEBI	CHEBI:35154
SMILES	[Mn]
IUPAC Name	manganese
InChI Key	PWHULOQIROXLJO-UHFFFAOYSA-N

Thermo Scientific Alfa Aesar Sodium thiosulfate, 1.0N Standardized Solution

CAS: 7772-98-7 Formula molecolare: Na2O3S2 Molecular Weight (g/mol): 158.10 Numero MDL: MFCD00003499 InChI Key: AKHNMLFCWUSKQB-UHFFFAOYSA-L PubChem CID: 24477 IUPAC Name: disodium sulfanidesulfonate SMILES: [Na+].[Na+].[O-]S([S-])(=O)=O

Prezzi e disponibilità
Specifiche

Numero MDL	MFCD00003499
PubChem CID	24477
Formula molecolare	Na2O3S2
CAS	7772-98-7
Molecular Weight (g/mol)	158.10
SMILES	[Na+].[Na+].[O-]S([S-])(=O)=O
IUPAC Name	disodium sulfanidesulfonate
InChI Key	AKHNMLFCWUSKQB-UHFFFAOYSA-L

Thermo Scientific Acros Lead standard solution, for AAS, 1 mg/ml Pb in 2-5% HNO3

CAS: 10099-74-8 | N2O6Pb | 331.20 g/mol

Prezzi e disponibilità
Specifiche

Peso formulazione	331.21
Numero MDL	MFCD00011153
Pericolo per la salute 1	Danger
Nota nome	1 mg/ml Pb in 2% HNO3
Colore	Brown to Red or Green
Pericolo per la salute 2	GHS H Statement: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. May be corrosive to metals.
Pericolo per la salute 3	GHS P Statement: Keep only in original container. 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. Avoid breathing dust/fume/gas/mist/vapors/spray. Wash face, hands and any exposed skin thoroughly after handling. IF ON SKIN: Wash with plenty of soap and water. 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.
Forma fisica	Powder/Crystals
Molecular Weight (g/mol)	331.20
ChEBI	CHEBI:37187
SMILES	[Pb++].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Densità	1.0200g/mL
InChI Key	RLJMLMKIBZAXJO-UHFFFAOYSA-N
Punti di ebollizione	101.0°C
Gravità specifica	1.02
Imballaggio	Plastic bottle
PubChem CID	24924
Formula molecolare	N2O6Pb
CAS	7732-18-5
Indice di Merck	15, 5469
Punto di fusione	-3.0°C
Materiale o nome chimico	Lead standard solution
Grado	AAS
IUPAC Name	λ²-lead(2+) dinitrate
Concentrazione	997 to 1003 μg/mL of Pb(2+) in 2 to 5% HNO3 (20°C)

Promozioni disponibili

Fisher Bioreagents Tris Base (White Crystals or Crystalline Powder/Molecular Biology), Fisher BioReagents™

CAS: 77-86-1 Formula molecolare: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Sinonimo: Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Prezzi e disponibilità
Specifiche

Sinonimo	Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol
PubChem CID	6503
Formula molecolare	C4H11NO3
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N

Promozioni disponibili

HYDRANAL™ - NEXTGEN Coulomat AG-FI, Honeywell Fluka™

Anolyte for coulometric Karl Fischer titrations, for cells with and without diaphragm

Prezzi e disponibilità
Specifiche

Numero UN	UN1230
Imballaggio	Glass Bottle
CAS min. %	≥60%
Colore	Yellow
Forma fisica	Liquid
Informazioni di solubilità	Completely Miscible in Water
CAS	67-56-1
Punto di fusione	-98°C (Methanol)
Conservazione consigliata	Temperatura ambiente
Materiale o nome chimico	HYDRANAL™ - NEXTGEN Coulomat AG-FI
Densità	0.893 g/cm³ (at 20°C)
Punti di ebollizione	64°C to 65°C (Methanol)
Punto d'infiammabilità	14°C

Thermo Scientific Acros Bromine, 1M solution in acetic acid, AcroSeal™

CAS: 7726-95-6 | Br | 79.91 g/mol

Prezzi e disponibilità
Specifiche

Peso formulazione	159.82
Sinonimo	bromine,dibromine,brom,bromine solution,brome,bromo,broom,bromine water,bromo italian,bromo spanish
Numero MDL	MFCD00010896
Formula lineare	Br₂
Pericolo per la salute 1	GHS Signal Word: Danger
Nota nome	1M solution in acetic acid
Pericolo per la salute 2	GHS P Statement Fatal if inhaled. Causes severe skin burns and eye damage. Very toxic to aquatic life. Flammable liquid and vapor.
Colore	Red
Pericolo per la salute 3	GHS P Statement Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. 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. Avoid release to the environment.
Forma fisica	Liquid
Molecular Weight (g/mol)	79.91
ChEBI	CHEBI:29224
SMILES	[Br-]
Densità	3.111
InChI Key	CPELXLSAUQHCOX-UHFFFAOYSA-M
Punto d'infiammabilità	40°C
PubChem CID	24408
Formula molecolare	Br
Informazioni di solubilità	Solubility in water: soluble.
CAS	64-19-7
Indice di Merck	15, 1401
Materiale o nome chimico	Bromine
IUPAC Name	bromide
Concentrazione	0.90 to 1.10M

Thermo Scientific Acros Benzalkonium chloride, alkyl distribution C8-C16, 50 wt% aqueous solution

CAS: 8001-54-5 Formula molecolare: C9H13ClN Molecular Weight (g/mol): 170.66 Numero MDL: MFCD00145757 Sinonimo: Alkyl-benzyl-dimethylammonium chloride

Prezzi e disponibilità
Specifiche

Sinonimo	Alkyl-benzyl-dimethylammonium chloride
Numero MDL	MFCD00145757
Formula molecolare	C9H13ClN
CAS	8001-54-5
Molecular Weight (g/mol)	170.66

Thermo Scientific Acros Nickel standard solution, for AAS, 1 mg/ml Ni in 2-5% HNO3

CAS: 7440-02-0 | Ni | 58.69 g/mol

Prezzi e disponibilità
Specifiche

Peso formulazione	58.69
Numero MDL	MFCD00011137 MFCD06798735
Pericolo per la salute 1	Danger
Nota nome	1 mg/ml Ni in 2% HNO3
Colore	Green
Pericolo per la salute 2	GHS H Statement May cause cancer by inhalation. May damage the unborn child. Causes severe skin burns and eye damage. May produce an allergic reaction. Harmful to aquatic life with long lasting effects. May be corrosive to metals.
Pericolo per la salute 3	GHS P Statement Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. 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 only in original container.
Forma fisica	Crystals, Crystalline Powder and/or Chunks
Molecular Weight (g/mol)	58.69
ChEBI	CHEBI:28112
SMILES	[Ni]
Densità	1.0320g/mL
InChI Key	PXHVJJICTQNCMI-UHFFFAOYSA-N
Gravità specifica	1.032
CAS min. %	96.9
Imballaggio	Plastic bottle
PubChem CID	935
Formula molecolare	Ni
CAS	7732-18-5
Materiale o nome chimico	Nickel standard solution
Grado	AAS
IUPAC Name	nickel
Solubilità	Soluble in water
CAS max %	97.1
Concentrazione	990 to 1010 μg/mL Ni in 2 to 5% HNO3 (20°C)

Thermo Scientific Alfa Aesar Potassium chloride, 0.010M, Conductivity Standard

CAS: 7447-40-7 Formula molecolare: ClK Molecular Weight (g/mol): 74.55 Numero MDL: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 SMILES: [Cl-].[K+]

Prezzi e disponibilità
Specifiche

Numero MDL	MFCD00011360
PubChem CID	4873
Formula molecolare	ClK
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
SMILES	[Cl-].[K+]
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M

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