Calcium Buffer Solution

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Product Short Description: Lab Reagent
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EDTA Di Sodium

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Product Short Description: The Disodium salt of EDTA is the most commonly used form of this versatile organic complexing agent.
Product Technical Specification:

EDTA is most commonly used to determine hardness (i.e., Calcium and Magnesium ions) in water, where the pH must be approximately 10 and is usually controlled by adding a buffer such as Water Hardness Buffer. Water Hardness Indicator (Eriochrome Black T), Eriochrome Blue Black R, Calmagite, and Murexide are used for hardness or Calcium determinations using EDTA.

Remarks:

EDTA cas no : 6381-92-6
EDTA chemical Formula : [(HO2CCH2-)(NaO2CCH2-)N-CH2]2·2H2O

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Sodium Thiosulfate 0.1 Normal Solution

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Product Short Description: Sodium Thiosulfate Standard Solution
Product Technical Specification:

Product Specification:

Product Number:

319546

CAS Number:

1313-82-2

MDL:

MFCD00003499

Formula:

Na2O3S2

Formula Weight:

158.11 g/mol

 

TEST  Specification

Appearance (Clarity)

Clear

Appearance (Color)

Colorless

Appearance (Form)

Liquid

Purity Titration by NATH (N) Sample as Titrant

0.0950 - 0.1050 Normal

NIST (SRM #136E)

Confirmed

Traceable to NIST SRM #136E (Potassium dichromate) Expiration Date Period 3 Years

 

 Specification: PRD.0.ZQ5.10000012014

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Sodium Hydroxide Pellet

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Product Short Description: Sodium Hydroxide is a strong base laboratory reagent.
Product Technical Specification:

SPECIFICATION
SODIUM HYDROXIDE PELLETS (Lab GRADE)
CAUSTIC SODA PELLETS
CAS NO: 1310-73-2
NaOH: MW: 40.00

TEST SPECIFICATION
Description White, hygroscopic pellets
Identify Na: Passes test
OH: Passes test
Test solution (10% w/v; water) The solution is clear and colourless
Solubility Soluble in 1 to 10 parts of water and in alcohol
 Assay (NaOH) NLT 97.0 %
Carbonate (as Na2CO3) NMT 2 %
Chloride (CI) NMT 125 ppm
Sulfate (SO4) NMT 75 ppm
Arsenic (As) NMT 4 ppm
Iron (Fe) NMT 20 ppm
Potassium (K) Passes Test
Remarks:

Sodium Hydroxide is Extremely corrosive product. Potential symptoms of over-exposure are irritation of eyes, skin and mucous membranes, pneumonitis, eye and skin burns, temporary lose of hair etc.

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Methyl Red Indicator Solution

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Product Short Description: Lab Reagent
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Boric Acid 3% Solution

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Product Short Description: Lab Reagent
Product Technical Specification:

 

CAS Number: 10043-35-3
MDL: MFCD00011337
Formula: H3BO3
Formula Weight: 61.83 g/mol

 

Test Specifications
Appearance (Color) White to Off-White
Appearance (Form) Powder
Chloride (Cl) <0.001 %
Phosphate (PO4)  < 0.001 %
Sulfate (SO4) < 0.01 %
Calcium (Ca) < 0.005 %
Heavy Metals (as Lead) < 0.001 %
Iron (Fe) < 0.001 %
Recommended Retest Period 2 years  
Note
ACS tests		  
Assay  >_ 99.5 %
Insoluble in Methanol <_ 0.005 %
Nonvolatile with Methanol <_ 0.05 %

 

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Fluoride Ion Solution 0.0100 Molar

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Product Short Description: Lab Reagent
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Potassium Fuloride Solution - 1 Mole

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Product Short Description: Lab Reagent
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Hardness Titrating Solution (AF Grade)

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Product Short Description: Lab Reagent
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Sodium Sulphite (Sulfite), 0.05% Solution

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Product Short Description: Lab Reagent
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