SafeAir TDI / MDI Detection Badges
Aromatic diisocyanates, such as toluene diisocyanate (TDI) and methylene diphenyl diisocyanate (MDI), are commonly used to make polyurethane foams and related products. Inhalation of these diisocyanates can lead to irritation or damage to the respiratory tract.
SafeAir TDI/MDI badge is a simple, cost-effective, industry-proven solution for TDI detection and/or MDI detection in the workplace. The badge uses colorimetric technology (i.e. color change) to provide immediate indication when TDI/MDI vapor is present. No need for lab analysis or electronic reader.
TDI Color Comparators are available to provide higher resolution and a broader range. The comparator is used to determine TDI exposure dose by matching the color on the badge to a color on the comparator color wheel. It measures TDI exposure dose from 5 to 140 ppb-hour.
Features:
- Highly sensitive and selective to target chemical
- Easy to use
- Ideal for daily employee screening or leak detection
- Measures TWA exposure
- No calibration or laboratory analysis needed
SafeAir TDI / MDI Detection Badges
| Physical Specifications |
| Dimensions |
74mm x 41mm x 1mm |
| Weight |
1.5 g |
| Color change |
Off-white to red |
| Refrigerated shelf life |
1 year |
| Sampling Parameters |
TDI & MDI |
| Exposure level (Badge) |
5 ppb • hr |
| Exposure level (Badge with TDI color comparator) |
5 – 140 ppb • hr |
| Exposure level (Badge with MDI color comparator) |
5 – 140 ppb • hr |
| Minimum detectable limit (8 hours) |
0.6 ppb |
| Maximum recommended sampling time |
24 hours |
| Minimum recommended sampling time |
15 minutes |
| Relative humidity range |
11% - 87% |
| Face velocity range |
10 – 100 cm/sec |
| Temperature range |
15°C - 32°C (60°F - 91°F) |
| Light effect – UV (direct sunlight) |
not recommended >4hrs |
| Light effect – visible |
no effect |
| Color stability |
two weeks |
| Known interferences |
Other aromatic diisocyanates and high concentrations of hydrazine |
SafeAir TDI / MDI Detection Badges
SafeAir TDI / MDI Detection Badges Exposure Sample
SafeAir TDI / MDI Detection Badges
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