Ideal for Children and Schools
For safe, nonhazardous scientific experiments, these Enviro-Safe® Thermometers are filled with a special biodegradable Enviro-Safe liquid in lead-free glass (no disposal problems). Accuracy is guaranteed with calibration traceable to NIST. Easy to read with green liquid against white back glass and permanently fused markings. Total Immersion. Range -20° to 150°C.