Summary
E-Test Dusts are the test dusts for the environmental tests of the electrotechnical products.
APPIE is preparing and distributing E-Test Dusts which are prepared in accordance with the manufacture standard of APPIE based on IEC 60068-2-68.
* IEC 60068-2-68 : Environmental testing – Part 2-68 : Tests – Test L: Dust and sand
E-Test Dusts : Material used
Talc : 3MgO · 4SiO2 · H2O particle density :ρρ= 2.8∼3.0 g/cm3
Quartz : SiO2 99%
particle density :ρρ= 2.6∼2.8 g/cm3
E-Test Dusts : Classification of Dusts salling
| Classification | Particle size | Package |
| E-Talc Dust Powder ( ETDP ) | < 75μm | 2.0 kg |
| E-Quartz Dust Fine ( EQDF ) | < 75μm | 2.5 kg |
| E-Quartz Dust Coarse ( EQDC ) | < 150μm | 3.0 kg |
| E-Quartz Dust Sand ( EQDS ) | < 850μm | 4.5 kg |
* Each vial is 3000 ml.
Applicable test
| Procedure | Dust Classification | Particle size |
Dust concentration | Notes | |
| Test L | Method La 1 | E-Talc Dust Powder | < 75μm | 600g/m2/hr (deposit on reference surface) |
Test includes a cycling of the air pressure in the chamber |
| Method La 2 | E-Talc Dust Powder | < 75μm | 2kg/m3 ( chamber volume) |
Air pressure in the specimen may be reduced |
|
| Test Lb | E-Quartz Dust Fine | < 75μm | 6g/m2/day (deposit on reference surface) |
Free settling dust | |
| Test Lc | Method Lc 1 | E-Quartz Dust Fine E-Quartz Dust Coarse E-Quartz Dust Sand |
< 75μm < 150μm < 850μm |
1g/m3 3g/m3 10g/m3 |
Blown dust and sand Recirculating chamber |
| Method Lc 2 | E-Quartz Dust Fine E-Quartz Dust Coarse E-Quartz Dust Sand |
< 75μm < 150μm < 850μm |
1g/m3 3g/m3 10g/m3 |
Free blowing dust | |
Summary of test characteristic
| Test La : | non-abrasive fine dust | |
|
Method La1 : | cyclic air pressure |
| Method La2 : | constant air pressure | |
| Test Lb : | free settling dust | |
| Test Lc : | blown dust and sand | |
| Method Lc1 : | recirculating chamber | |
| Method Lc2 : | free blowing dust | |
|
||
| * Refer to IEC 60068-2-68 for the details of the test method ( La, Lb, Lc ) and their apparatus. | ||
Size distribution
APPIE and IEC measure the particle size by using of other method mutually.
Therefore,the particle size distribution provided by APPIE and IEC are similar,but not same.
The measuring method of the particle size
Top size: Sieving
Distribution : Laser diffraction – scattering method
| E-Talc Dust Powder Particle size ( manufacture standard ) |
|
| Top size : 75μm over size 1 % or less | |
| Distribution | |
| Particle size | under size % ( mass base ) |
| 62µm | 96±4% |
| 40µm | 91±6% |
| 20µm | 58±10% |
| E- Quartz Dust Fine Particle size ( manufacture standard ) |
|
| Top size : 75μm over size 1 % or less | |
| Distribution | |
| Particle size | under size % ( mass base ) |
| 40µm | 87±7% |
| 20µm | 64±6% |
| 10µm | 42±6% |
| 5µm | 25±5% |
| 2µm | 10±4% |
| E- Quartz Dust Coarse Particle size (manufacture standard) |
|
| Top size : 150μm over size 1 % or less | |
| Distribution | |
| Particle size | under size % ( mass base ) |
| 105µm | 79±9% |
| 74µm | 60±8% |
| 40µm | 36±8% |
| 20µm | 24±8% |
| 10µm | 15±7% |
| 5µm | 9±5% |
| 2µm | 3.5±2.5% |
| E- Quartz Dust Sand Particle siz e (manufacture standard) |
|
| Top size :850μm over size 1 % or less | |
| Distribution | |
| Particle size | under size % ( mass base ) |
| 592µm | 95.5±3.5% |
| 419µm | 77±13% |
| 296µm | 32±12% |
| 209µm | 12±6% |
| 148µm | 8±4% |
Microphotograph
Price
Air-freight charge and handling charge are added to prices in the list. Invoice will be sent for inquiry with required quantity and destination of the cargo. Delivery of cargo shall be made after confirming your payment to our bank account or Credit cards indicated in the invoice.