WARNING: The filter medium contained in the ammonia filter will produce phosphoric acid if the material comes in contact with water. In the course of sampling, moisture vapor will be drawn through the filter. When the recommended intervals listed below are reached, the filter must be changed before harmful levels of acid are produced. Regardless of the humidity at the time and place of sampling operations, do not tip the filter on end, but keep it level to prevent any accumulated liquid from escaping. Place the filter in a suitable container for proper disposal refer to state and local laws. Full MSDS for the filter medium is available from Perma Pure Inc.
Between 4% to 6% reduction in Hg & H2S reading in the presence of 0.05 ppm to 50 ppm ammonia levels.
We recommend that no more than 1,200 liters of sampled air be drawn through the filter. After this accumulated volume, the moisture content will adversely affect the filter medium and produce phosphoric acid.
Total number of auto regenerations that can be performed before the filter is changed:
- 8 regenerations at 70 to 100% humidity
- 12 regenerations at 41 to 69% humidity
- 16 regenerations at 0 to 40% humidity
If the instrument is operated manually, and the ammonia filter is removed for regenerations, the total number of samples can be increased by a factor of 60 each, 30 second samples, per regeneration.
The recommended total number of samples that may be taken through the filter:
- 800 samples at 70% to 100% relative humidity
- 1,200 samples at 0% to 40% relative humidity
A proportionate number of samples between 800 and 1,200 may be taken at 41% and 69% relative humidity. The number of regenerations, with the filter in place in the instrument’s intake, should not exceed the above limitations.
- 4,000 samples at 70% to 100% relative humidity
- 6,000 samples at 0% to 40% relative humidity
A proportionate number of samples between 4,000 and 6,000 may be taken at 41% and 69% relative humidity. The number of regenerations, with the filter in place in the instrument’s intake, should not exceed the above limitations.
SAFETY INFORMATION FOR PHOSPHORIC ACID
Health Hazard Data:
- Threshold limit value (tlv/twa): 1 mg/m3 (ppm)
- Short-term exposure limit (stel): 3 mg/m3 (ppm)
- Permissible exposure limit (pel): 1 mg/m3 (ppm)
- Toxicity: ld50 (oral-rat)(mg/kg) – 1530 ld50 (skin-rabbit)(mg/kg) – 2740
- Carcinogenicity: ntp: no, iarc: no, z list: no, OSHA reg: no
- Effects of overexposure: Contact with skin or eyes may cause severe irritation or burns; inhalation of vapors may cause severe irritation of the respiratory system.
- Target organs: respiratory system, eyes, skin
- Medical conditions generally aggravated by exposure: none identified
- Routes of entry: inhalation, ingestion, eye contact, skin contact
Emergency and first aid procedures:
- Call a physician
- If swallowed, do not induce vomiting; if conscious, give water, milk, or milk of magnesia
- In case of contact, immediately flush eyes or skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes
- Wash clothing before re-use
Dispose of used filters in a manner consistent with federal, state, and local regulations:
- RCRA D-Series Maximum Concentration of Contaminants: None listed
- RCRA D-Series Chronic Toxicity Reference Levels: None listed
- RCRA F-Series: None listed
- RCRA P-Series: None listed
- RCRA U-Series: None listed