Earth & Environmental Science

Fast, accurate dissolved oxygen determinations with no mixing of reagents, no titrations and no expensive, electronic meters. Simply snap the tip of the pre-scored, self-filling reagent ampule in the water sample and in less than two minutes the colo...

Fast, accurate dissolved oxygen determinations with no mixing of reagents, no titrations and no expensive, electronic meters. Simply snap the tip of the pre-scored, self-filling reagent ampule in the water sample and in less than two minutes the colo...

Premade Winkler solutions greatly reduce your preparation time for this standard dissolved oxygen test procedure. The titration calculations have been simplified and supplied so that mL of reagent will translate directly into ppm of dissolved oxygen....

No mess, no spills, no hassles-the easy-to-use color reaction test allows you to determine dissolved oxygen levels in water in a matter of minutes. Simply add a Tes Tab® tablet to a water sample, mix, and compare the sample color to the color cha...

What exactly are the film-like deposits left on glassware in your laboratory and pots and pans at home? Those whitish deposits are actually residues of calcium and magnesium salts found in water. As these compounds become more numerous, the “hardness...

Easy way to determine water hardness in seconds. Two test papers are packaged in one convenient plastic dispenser. The first test paper allows you to measure water hardness between 0-20 grains per gallon. The second measures water hardness between 10...

Students love to play the role of an environmental “watchdog.” In this activity, students will test materials from their environment for lead content. Lead can be found in many common items and is very hazardous. We guarantee your students will enjoy...

This kit uses a fast, simple and efficient technique to measure phosphate levels from 0-10 ppm (higher if samples are diluted prior to testing). Simply snap one of the self-filling test ampules in the sample cup, wait four minutes, and directly compa...

This kit uses a fast, simple and efficient technique to measure phosphate levels from 0-10 ppm (higher if samples are diluted prior to testing). Simply snap one of the self-filling test ampules in the sample cup, wait four minutes, and directly compa...