ISO 12345-2021 pdf download.Diesel engines – Cleanliness assessment of fuel injection equipment.
Each requires the specific laboratory apparatus as given in 4.6.1 and 4.6.2.
4.6.1 Gravimetric analysis apparatus
See ISO 16232:2018 9.2.2.
4.6.1.1 Non-ventilated drying oven
Capable of maintaining a temperature of 80 °C+2°C.
4.6.1.2 Filter holder
Comprising:
一glass funnel of at least 300 ml capacity with suitably calibrated volumetric graduations (e.g.25ml土2ml),
-suitable cover for the funnel (e.g petri dish),
-clamping device,
-suitable base to support the membrane filter, and
-a means of dissipating any static electricity generated during the filtering process.
4.6.1.3 Vacuum flask
Suitable for the filter holder and of capacity enabling it to hold the entire volume of sample liquid without refilling.
4.6.1.4 Vacum device
Able to generate a vacuum of 86,6 kPa (gauge).
4.6.1.5 Solvent dispenser (syringe)
A pressurized vessel that discharges solvent through an in-line filter membrane with a pore size of not greater than 1 um.
4.6.1.6 Tweezers
Flat-bladed (non-serrated, blunt tips), and of stainless steel.
4.6.1.7 Graduated cylinders
For measuring out the volume of test liquid, the accuracy of which shall be in accordance with ISO 4788,unless a suitable alternative can be demonstrated (with a minimum accuracy of +2 %).
4.6.1.8 Sample bottles
Of 250 ml nominal capacity, preferably flat-bottomed and wide-mouthed, with a screw cap containing suitable internal polymeric seal.
4.6.1.9 Plastic film
0,05 mm thick x 50 mm x 50 mm, placed between the sample bottle cap and neck if the cap does not have an internal seal. The film shall be compatible with both the cleaning and sample liquids.
4.6.1.10 Filter membranes
Preferred 25 mm or 47 mm in diameter, white, without grids, and compatible with the fluid to be analysed and with the rinsing chemicals. Reference membranes shall have a recommended pore size of between 5 um to 8 um. The pore size used shall be stated.
4.6.1.11 Petri dishes
Of glass and 150 mm diameter.
4.6.1.12 Analytical balance
Of at least 0,05 mg accuracy.
4.6.1.13 Alpha-ray ionizer
To be used to prevent collction of dust during the weighing operation placed under the balance scale incorporating the filter and projecting from beneath it.
4.6.1.14 Air dryer
4.6.1.15 Collecting vessel
A vessel with a vacuum device connecting, to be used to collect test fluid.
4.6.2 Microscopic analysis apparatus
See ISO 16232:2018, 9.2.3 and 9.3.1.ISO 12345 pdf download.