"Environmental Lab...Plus!" contains 28 color pages displaying lab-analysis equipment for titrating, determining DO/BOD/COD, assessing (sub)microscopic organisms, testing for organics, measuring pH, and monitoring other sample qualities. Several pages of this 6- X 11-in. booklet also cover supplies.
Thomas Scientific, PO Box 99, Swedesboro, NJ, 08085-0099. Fax: (800) 345-5232.