AS ISO 9934.2:2020 Non-destructive testing一Magnetic particle testing Part 2: Detection media

AS ISO 9934.2:2020 Non-destructive testing一Magnetic particle testing Part 2: Detection media.
7.10.2 Short-term test
7.10.2.1 Equipment
A stirring arrangement similar to Figure 2 shall be used.
1) Speed of stirring blade: 3 000 +0/-300 r/min.
2) Stirring cup: Capacity 2 1.
3) Reference blocks type 1 and type 2 as detailed in Annex B.
4) UV-A source to give irradiance of 10 W/m2, to the requirement of ISO 3059.
7.10.2.2 Procedure
Stir a sample for 2 h. Compare the indications on reference block Type 1 and Type 2 as is defined in Annex B, produced by the stirred probe and the reference probe.
7.10.2.3 Requirements
Any discernible change in the quality of indications shall be cause for rejection.
7.11 Foaming
Foaming shall be checked during mechanical stability test to 7.10.1 or 7.10.2. Significant foaming shall be cause for rejection.
7.12 pH
The pH of aqueous carrier liquids shall be determined according to Iso 4316. The value shall be reported.
7.13 Storage stability
The expiry date shall be given by the producer and shall be marked on each original container.
7.14 Solids content
The recommended magnetic particle content in g/l of magnetic inks shall be given by the supplier.
7.15 Sulfur and halogen content
For products designated low in sulfur and halogens, the sulfur and halogen content shall be determined by a suitable method which is accurate to ±10 mg/I (10 parts per million) at 200 mg/I (200 parts per million) (of sulfur/halogens.
— Sulfur content shall be less than 200 mg/I (200 parts per million)
— Halogens content shall be less than 200 mg/I (200 parts per million) (halogens shall be taken as chlorine + fluorine)
8 Testing requirements
Testing shall be carried out according to the requirements of Table 1.
Type testing (Q) and batch testing (B) shall be the responsibility of the supplier or manufacturer. Inservice testing (P) shall be the responsibility of the user.AS ISO 9934.2 pdf download.