Naar de inhoud springen Naar het navigatiemenu springen

Indicator buffer tablets, 100 stuks

for the determination of water hardness with EDTA
Icon_EVE-EUD Please consider that this product might be liable to some legal sanctions as for example to obtain an end user declaration or the prohibition of some applications. For details please do contact your counterpart in our sales department!
Mogelijke gevolgen: leiden tot schade aan de gezondheid, irriteren organen, huid of luchtwegen. Leiden in grotere hoeveelheden tot de dood. Veiligheid: zoals hierboven; bij huidirritaties of oogcontact met water of geschikt middel spoelen.
Warning
H302-H317-H319
i harmful if swallowed, may cause an allergic skin reaction, causes serious eye irritation
P261 P280 P301+P312 P305+P351+P338 P330 P501
i avoid breathing dust/fume/gas/mist/vapours/spray, wear protective gloves/eye protection/face protection, IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell, IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing, rinse mouth, dispose of contents/container in accordance with local/regional/national/international regulations
VE
Verp.
WGK 1

Non-binding application proposal:
Dissolve one tablet in 50 ml water sample and bring to pH 11 with approx. 1 ml ammonia solution 30 % (art. CP17). Titrate with EDTA disodium salt volumetric solution (art. T136 or T137) from red to green.

32,15 €/VE 

Excl. btw | 100 stuks Per VE

Bestelnr. 7649.1

Op voorraad
Vrij van verzendingskosten vanaf 250 €
Snelle en betrouwbare levering!
Vanaf 6 VE 30,54 €/VE
Vanaf 24 VE 28,94 €/VE
Indicator buffer tablets
Geselecteerde hoeveelheid:   0
  1. Tussentotaal:  0.00
Bestelnr. VE Verp. Prijs Hoeveelheid
7649.1 100 stuks plastic

32,15 €

7649.2 500 stuks plastic

85,90 €

Op voorraad
Beschikbaar
In bestelling
Niet meer verkrijgbaar
Leveringsdatum onbekend
Geselecteerde hoeveelheid:   0
  1. Tussentotaal:  0.00

Downloads / MSDS


Algemene informatie

Determination of Water Hardness

Water contains a whole host of salts and other compounds in addition to the gases dissolved in it (oxygen, nitrogen, carbon dioxide). Its most important constituents are magnesium and calcium in the form of their chlorides, sulphates and bicarbonates. These dissolved salts are known as hardeners. The bicarbonates precipitate in the heat (during boiling) as carbonates and are known as carbonate hardness or temporary hardness. The sulphate and chloride compounds are known as permanent hardness or non-carbonate hardness. Total hardness describes the concentration of alkaline earth metal ions in water.

The unit of measurement for water hardness used to be 1 °dH (German degrees of hardness), which corresponds to 10,00 mg CaO or 7,19 mg MgO in one litre of water. Today we use millimoles per litre (mmol/l), whereby 1 °dH corresponds to 0,18 mmol/l of earth metal ions and 1 mmol/l corresponds to 5,6 °dH.


Indicators and Dyes

Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications.


Analysecertificaten

Hier kunt u uw analysecertificaat voor het geselecteerde product zoeken en downloaden. Geef een chargenummer op.
De volgende analysecertificaten werden gevonden:

Type analysis

Suitability as indicatorcomplies
Disintegration time (25 °C)100 s