From air to soil to water, Environmental Express, HPS and Zefon International are your source for sampling, sample preparation, calibration and analysis. Explore how the Power of 3 can meet your environmental testing needs.
HPS manufactures Certified Reference Materials of PVC filters spiked with silica in the form of Alpha Quartz from NIST SRM 1878b or Cristobalite from NIST SRM 1879b for use with NIOSH 7500 SILICA, CRYSTALLINE, by XRD or similar methods.
For Calibration/Analysis see our filters for Alpha Quartz and Crystalline Silica.
| Part Number | Description |
| TMFM-AQTZ | TMFM Alpha Quartz |
| TMFM-CRIST | TMFM Crystalline Silica |
| PVC37MMPC | PVC blanks |
Zefon International Sampling Products
| Part Number | Description |
| 805558 | Escort Elf personal sampling pump with sampling line |
| 7M52P | 37 mm, 2-piece air sampling filter cassette preloaded with 5.0 micron PVC filters that are matched within 20µg. 50/box |
| 7M53P | 37 mm, 3-piece air sampling filter cassette preloaded with 5.0 micron PVC filters that are matched within 20µg. 50/box |
| 7P53P | 37 mm 3-piece air sampling filter cassette preloaded with 5.0 micron PVC filters that are pre-weighed to within 10µg. 50/box |
| 7P52P | 37 mm 2-piece air sampling filter cassette preloaded with 5.0 micron PVC filters that are pre-weighed to within 10µg. 50/box |
| ZA0060 | Zefon 37 mm aluminum cyclone for respirable dust |
| ZA0062 | Zefon 37 mm aluminum cyclone for respirable dust with holder |
| 7P52P-GS | 37 mm, 2 piece styrene cassette preloaded with 5.0µm Gravi-Sert™ filter capsule. 50/bx |
Environmental Express Sample Collection and Preparation Products
If you are looking for a custom product, we are working together to meet your custom requirements.
Looking for a custom filter, we can help you. Click for Filter Custom Quotation.
Need a custom blend? Click for a Custom Blend Quotation.