Dichroic Light Bulbs. Browse our range of dichroic low voltage spot lamps, these lamps are great value for money and energy efficient. We have a wide range of wattages including 20, 35, 50watt, MR16 & MR11 lamps in spot, flood, and wide flood beam angles as well as coloured dichroics for effective ambient lighting.
21,041 Testing Laboratories Companies in the United States. Search or browse our list of Testing Laboratories companies by category or location. Skip navigation
They also identify the five substances tested for in Federal drug-testing programs and require the use of drug labs certified by SAMHSA. The most common method of drug testing, urinalysis, can be done at the workplace (at a health unit, for example), a doctorâs office or any other site selected by the employer. An employee or applicant provides a sample to be tested.