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Aluminium oxide 20% in water, colloidal dispersion

Supplier: Thermo Fisher Scientific

Description: Aluminium oxide 20% in water, colloidal dispersion

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Tetramethylammonium hydroxide 10% in water

Supplier: Thermo Fisher Scientific

Description: Tetramethylammonium hydroxide 10% in water

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Morin hydrate 1-2 mol/mol water for the determination of Al, Be, Zn, Ga, In, Sc, for microscopy, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Description: Morin hydrate is a yellowish pigment and a fluorescent indicator. It is used for the fluorimetric determination of several metals, mostly aluminum. Morin has been utilised in fluorescent microscopy as a fluorescent nuclear stain and as an application to detect aluminium in the brain by demonstrating metal salts.

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1-Propanol ≥99.0% (by GC, corrected for water content), BAKER ANALYZED®, J.T.Baker®

Supplier: Avantor

Description: 1-Propanol ≥99.0% (by GC, corrected for water content), BAKER ANALYZED®, J.T.Baker®

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Carbon disulphide ≥99.9% (by GC, corrected for water content), ULTRA RESI-ANALYZED® for spectroscopy, J.T.Baker®

Catalog Number: (E350-01)

Supplier: Avantor

Description: Suitable for NIOSH analytical methods 1003, 1500, and 1501 for hydrocarbon analysis and spectroscopy.

UOM: 1 * 500 mL

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Hexane (mixture of isomers) ≥99.5% (by GC, corrected for water content) (n-hexane ≥95%), ULTRA RESI-ANALYZED® for organic residue analysis, J.T.Baker®

Supplier: Avantor

Description: Hexane (mixture of isomers) ≥99.5% (by GC, corrected for water content) (n-hexane ≥95%), ULTRA RESI-ANALYZED® for organic residue analysis, J.T.Baker®

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Cesium hydroxide 50% in water 99.9% (trace metals basis) for analysis

Supplier: Thermo Fisher Scientific

Description: Cesium hydroxide 50% in water 99.9% (trace metals basis) for analysis

VWR® ARISTAR®, Multi-Element Standards, Anionic for Ion Chromatography

Supplier: VWR Chemicals

Description: Ion chromatography anion multi-element standard solution I, 1000 mg/L, VWR® ARISTAR®, Matrix: H₂O, Contents: F, Br, PO₄ in water, Application: Ion chromatography standards

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Palladium 5% on activated carbon paste (50% water), sulfided A103038-5

Catalog Number: (45497.09)

Supplier: Thermo Fisher Scientific

Description: Palladium 5% on activated carbon paste (50% water), sulfided A103038-5

UOM: 1 * 10 g

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VWR®, Racks for Centrifuge Tubes, Floating

Catalog Number: (525-0972)

Supplier: VWR Collection

Description: Rack, PP, white. This 'open style' floating rack provides tubes with maximum contact with the water and better circulation of the water around the tubes, allowing superior temperature control of samples.

UOM: 1 * 2 items

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VWR®, Total Hardness Indicator, Tablets for Hardness of Water Determinations, Avantor

Supplier: VWR Chemicals

Description:

Indicator tablets for determination of water hardness by titration with EDTA.

Specifications
Minimum weight: ≥ 0.20 g
Maximum weight: ≤ 0.23 g
Disintegration time (at 25°C): ≤ 150 s
Application test: conforms

The tablets are dissolved in 100 ml of the water sample to be tested, which has been buffered at pH 10 with 1 ml of Ammonia/ Ammonium chloride buffer solution, and then titrated with EDTA solution (0,01 M) till the sample turns from red to blue.
Total hardness in mg/l = 10×ml of titrant used.

Control samples of calcium carbonate should be used to calibrate the method.

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