ISO 21191:2021 pdf free download

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ISO 21191:2021 pdf free download.Equipment for crop protection- Closed transfer systems (CTS) -Performance specification.
5.1.3.4 The pipe/hose supplying the rinsing water to the CTS shall be fitted with a pressure indicator
and any pump or other means of assisted dispense shall be fitted with a crop sprayer pressure gauge.
Sprayers shall be fitted with a pressure indicator, the accuracy of which shall be
— ±0,2 bar for working pressures between 1 bar (included) and 8 bar (included),
— ±0,5 bar for working pressures between 8 bar and 20 bar (included), and
— ±1 bar for working pressures more than 20 bar.
The pressure indicator shall be clearly readable. The pressure indication shall be stable. The scale of the pressure indicator shall be marked as follows:
— every 0,2 bar for working pressures less than 5 bar;
— every 1,0 bar for working pressures between 5 bar (included) and 20 bar (included);
— every 2,0 bar for working pressures more than 20 bar.
5.1.3.5 Ultraviolet disclosing goggles or filter with yellow lenses, to protect the eyes of the test
operator and to enhance visibility of UV fluorescence.
5.1.3.6 An ultraviolet light source: High output LED flashlight, with a wavelength of 385 nm to
400 nm and a minimum UV-A intensity of 10 000 itW/cm2.
5.1.3.7 Potable water and disposable wipes for dye removal.
5.1.3.8 An absorbent sheet able to collect all splashes and leakages placed on ground under the CTS to be tested. The dimension should be able to collect splashes and leakage from the CTS and connection to the application equipment.
5.1.4 Procedure
5.1.4.1 Load the test formulation to the nominal volume of the container (5.1.3.2). Thoroughly clean all external surfaces of the product container and CTS using the ultraviolet dye removal materials specified in 5.1.3.7. Scan all surfaces of the product container and CTS with the UV light source and remove any disclosed areas using the dye removal materials to ensure no dye is visible.
5.1.4.2 The operator shall ensure to use a coverall and gloves that are not contaminated with the test formulation. These can be tested using the UV light source in a dark room before and after the test. Connect the filled container prepared as specified in 5.1.4.1 to the CTS. Transfer the test formulation into the CTS to be tested in accordance with the CTS manufacturer’s instructions including the measuring device if fitted.
5.1.4.3 Immediately upon completion of the actions in 511.4.2 and with the connections to the container and CTS fully engaged and connected, blackout all windows and turn off all other light sources to the point that no visible light enters the room then use the UV light source to inspect all external surfaces of the container, CTS and associated connections. Using the appropriate yellow tinted spectacles/filter, observe the surfaces for evidence of leakage. Record any leakage in a test report (see example in Annex D).
5.1.4.4 Operate the container rinsing device of the CTS as detailed in the manufacturers’ operator manual to achieve the internal rinsing of the container and internal rinsing of the CTS as specified in
5.2. Use the UV light source to inspect all external surfaces of the product container, CTS and associated connections.ISO 21191 pdf download.

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