BS EN 888-2004 pdf download.Chemicals used for treatment of water intended for human consumption Iron ( Ⅲ )chloride.
5.1.3.1.1.3 Ecamine the surface of the liquid. if there are signs of surface contamination, take samples from the surface as descnbed in 5.1.3.1.2. Otherwise, take samples as described in 5.1.3.1.3.
5.1.3.1.2 Surface sampling
Take a sample using a suitable ladle. Lower the ladle into the liquid until the rim is just below the surface, so that the surface layer runs into it. Withdraw the ladle just before it fills completely and allow any liquid adhering to the ladle to drain off. If necessary, repeat this operation so that, when the other selected containers have been sampled in a similar manner, the total volume of sample required for subsequent analysis is obtained.
5.1 .3.1.3 Bottom sampling
Take a sample using an open sampling tube, or a bottom-valve sampling tube, suited to the size of container and the viscosity of the liquid.
When using an open sampling tube, close it at the top and then lower the bottom end to the bottom of the container. Open the tube and move it rapidly so that the bottom of the tube traverses the bottom of the container before the tube is filled. Close the tube, withdraw it from the container and allow any liquid adhering at the outside of the tube to drain off.
When using a bottom-valve sampling tube, close the valve before lowering the tube into the container and then proceed in a similar manner to that when using an open sampling tube.
5.1.3.2 Sampling from tanks and tankers
From each access point, take samples as follows:
a) from the surface of the liquid, using a ladle as described in 5.1.3.1.2;
b) from the bottom of the tank or tanker, using a sampling tube as described in 5.1.3.1.3 or using specially designed bottom-sampling apparatus:
c) from one or more positions, depending on the overall depth, between the bottom and the surface using a weighted sampling can.
5.2 Analyses
5.2.1 Main product
Iron (lll)chloride is determined as Fe (Ill) contents in the test sample. Fe (Ill) content is determined as the
difference between total iron content and Fe (II) content (see 8.1).
5.2.2 Impurities
5.2.3.1.3 Reagents
All reagents shall be of a recognized analytical grade and the water used shall conform to the grade 3 specified in EN ISO 3696.
5.2.3.1.3.1 Hydrochlonc acid (HCI). solution, mass fraction 30 %.
5.2.3.1.3.2 Hydrogen peroxide (H202). solution, mass fraction 30 %.
5.2.3.1.4 Apparatus
Ordinary laboratory apparatus and glassware together with the following.
5.2.3.1.4.1 Analytical balance.
5.2.3.1.4.2 Graduated cylinder, capacity 50 ml.
5.2.3.1.4.3 Round flask with reflux condenser.
5.2.3.1.4.4 Hot plate.
5.2.3.1.4.5 Volumetric flask, capacity 200 ml.
5.2.3,1.5 Procedure
Dissolve with 20 ml of water 20,0 g of the iron salt or iron solution. Add 5 ml hydrogen peroxide solution
(5.2.3.1.3.2) to iron (111)-samples. After adding 50 ml hydrochloric acid (5.2.3.1.3.1) boil me solution for 15 mm
by using a reflux condenser (5.2.3.1.4.3). Cool down the solution, transfer to a 200 ml volumetric flask
(5.2.3.14.5) and fill up to the mark with water. This is the sample solution.
5.2.3.2 Arsenic
The arsenic content shall be determined by hydride generation atomic absorption spectrometry (see B.4).
5.2.3.3 Cadmium
The cadmium content shall be determined by graphite furnace atomic absorption spectrometry (see B.6).
5.2.3.4 Chromium
The chromium content shall be determined by graphite furnace atomic absorption spectrometry (see 8.6).
5.2.3.5 Mercury
The mercury content shall be determined by cold vapour atomic absorption spectrometry (see B.5).
5.2.3.6 Nickel
The nickel content shall be determined by graphite furnace atomic absorption spectrometry (see 8.6).
5.2.3.7 Lead
The lead content shall be determined by graphite furnace atomic absorption spectrometry (see B.6).
5.2.3.8 Antimony
The antimony content shall be determined by hydride generation atomic absorption spectrometry (see B.4).
5.2.3.9 Selenium
The selenium content shall be determined by hydride generation atomic absorption spectrometry (see B.4).
6 Labelling — Transportation — Storage
6.1 Means of delivery
In order that the purity of the product is not affected, the means of delivery shall not have been used
previously for any different product or it shall have been specially cleaned and prepared before use.
6.2 Risk and safety labelling according to the EU Directives 4)
Iron (Ill) chloride is not subject to labelling regulations.
NOTE Annex I of the Directive 67/548/EEC on Classification, packaging and labelling of dangerous substances and its amendments and adaptations in the European Union contains a list of substances classified by the EU, Substances not in this Annex I should be classified on the basis of their intrinsic properties according to the criteria in the Directive by the person responsible for the marketing of the substance.
6.3 Transportation regulations and labelling
The commercial product can be subject to transportation regulations and. if so, the iron (Ill) chloride (a) is listed as UN Number 5) 1773 and the liquid forms (c) as UN number 2582.BS EN 888-2004 pdf download.
BS EN 888-2004 pdf download
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