Lab chemicals - Politek Vietnam Import Export Services Trading Company Limited

COD Standard Solution, 1000 mg/L as COD, 200 mL

quantri — Wed, 19 Mar 2025 02:48:05 +0000

For accuracy checks in Chemical Oxygen Demand determinations. 200 mL bottle

Applications:

Industrial Wastewater
Municipal Water

Technical Attributes

Concentration	1000 mg/L O₂
Description	COD
Parameter	COD
Platform	Solution
Quantity	200 mL

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Hach Ammonia Standard Solution, 10 mg/L, 500 mL

quantri — Wed, 19 Mar 2025 02:45:16 +0000

Ion Selective Electrode (ISE) standard solutions for laboratory analyses

ISE Standard Solution. Ammonia, 10.0 mg/L ±0.5 mg/L as NH3-N. 500 mL bottle.

Benefits

Design for use with Hach meters portfolio and other meters.

The basis for accurate ISE measurements is good care and calibration of the Ion Selective Electrode.

Technical Attributes

Concentration	10.0 mg/L ±0.5 mg/L NH₃-N
Concentration 2	0.00435 mol/L ±0.00003 mol/L as NH3-N
Description	Nitrogen-Ammonia Standard Solution, 10 mg/L NH₃-N, 500 mL
Package Type	Bottle
Parameter	Ammonia
Platform	Solution
Quantity	500 mL
Special Remarks	Observed shelf life after opening, following recommended storage and use: 3 months
Storage Conditions	10 – 25 °C (protect from light)

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Merck Titriplex® III for analysis

quantri — Wed, 19 Mar 2025 02:38:53 +0000

Product Information
CAS number	6381-92-6
EC number	205-358-3
Grade	ACS,ISO,Reag. Ph Eur
Hill Formula	C₁₀H₁₄N₂Na₂O₈* 2 H₂O
Chemical formula	C₁₀H₁₄N₂O₈2Na2H₂O
Molar Mass	372.24 g/mol
HS Code	2922 49 85
Structure formula Image
Quality Level	MQ200

Applications

Titriplex® III for analysis (ethylenedinitrilotetraacetic acid, disodium salt dihydrate) ACS,ISO,Reag. Ph Eur. CAS No. 6381-92-6, EC Number 205-358-3.

Storage and Shipping Information: Store at +15°C to +25°C.

Toxicological Information

LD 50 oral: LD50 Rat > 2000 mg/kg

Physicochemical Information

Melting Point	110 °C Elimination of water of crystallisation
pH value	4 – 5 (50 g/l, H₂O, 20 °C)
Bulk density	700 kg/m3
Solubility	100 g/l

Safety Information according to GHS

Hazard Pictogram(s)
Hazard Statement(s)	H332: Harmful if inhaled. H373: May cause damage to organs through prolonged or repeated exposure if inhaled.
Precautionary Statement(s)	P260: Do not breathe dust. P271: Use only outdoors or in a well-ventilated area. P304 + P340 + P312: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell. P314: Get medical advice/ attention if you feel unwell. P501: Dispose of contents/ container to an approved waste disposal plant.
Signal Word	Warning
RTECS	AH4410000
Storage class	10 – 13 Other liquids and solids
WGK	WGK 2 obviously hazardous to water
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

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Merck Buffer solution pH7.0

quantri — Wed, 19 Mar 2025 02:25:23 +0000

Properties

Grade	Certified reference material
Quality Level	300
Product line	Certipur^®
PH	7.0 (20 °C in H₂O)
Bp	109 °C/1013 hPa
Mp	-5 °C
Density	1.01 g/cm³ at 20 °C
Application(s)	environmental, food and beverages, general analytical, industrial qc, pharmaceutical
Format	mixture
Storage temp.	15-25°C

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Merck Buffer solution pH4.0

quantri — Wed, 19 Mar 2025 02:20:46 +0000

Properties

Grade	Certified reference material
Quality Level	300
Product line	Certipur^®
PH	4.0 (20 °C in H₂O)
Bp	1.01 g/cm³ at 20 °C
Application(s)	environmental, food and beverages, general analytical, industrial qc, pharmaceutical
Format	mixture
Storage temp.	15-25°C

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Merck Distilled water

quantri — Wed, 19 Mar 2025 02:03:01 +0000

Properties

Form: liquid
Refractive index: n20/D 1.34 (lit.)
Molecular Weight: 18.02
PH: 6.0-8.0 (25 °C)
Bp: 100 °C (lit.)
Mp: 0 °C (lit.)
Density: 1.000 g/mL at 3.98 °C (lit.)
Smiles String: O
InChI: 1S/H2O/h1H2

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