Line powered, long wave UV lamp (6 watt) is ideal to determine if E-Coli is present in
certain media. The portable long wave UV lamp (4 watt) is less expensive and operates on (4) AA batteries but may not meet state requirements. Please consult your local regulatory agency if considering this lamp for compliance monitoring. 14.8" x 3.5" x 2.6", weighs less than 2 lbs.