Mid-Term (MT) Electret
Mid-Term Electrets are approximately four times less sensitive than short-term electrets, making them ideal for typical deployments lasting between three to four months. They are shipped with 700+ volts to ensure numerous deployments, and can be readily analyzed at your home office or laboratory.
The mid-term electret contains a charged disk that serves as both the source for ion collection and as the integrating ion sensor. Negative ions produced inside an attached chamber (sold separately) are collected on the positively charged electret, causing a reduction of its surface charge.
Mid-term electrets are approximately four times less sensitive than a short-term electret, and three times more sensitive than a long-term electret. They are intended for typical deployments lasting between three to four months, and can be used multiple times.
If you return your retired, spent electrets to Rad Elec, we will issue a $3 credit to your account for each spent electret (including cover) that we receive!
- 3" (8 cm)
- 0.7" (2 cm)
- 2 oz. (30 grams)