Testing labs in Vista , CA

Techmaster Electronics is a US ISO/IEC 17025-accredited calibration laboratory (founded 1989, ANAB AC-1736) with five accredited labs across the US, providing test-equipment calibration, repair, sales and rentals.

Applied Industrial Microbiology, Inc. (AIM) is a specialized contract testing laboratory located at 2315 S Melrose Dr in Vista, California, offering focused microbiological analysis of food, water, and environmental samples. As a small, independently operated facility, AIM deliberately distinguishes itself from large corporate testing organizations by delivering personalized client service, direct access to experienced microbiologists, and flexible turnaround times. The laboratory applies validated, industry-recognized methods across its entire service portfolio, ensuring that every result carries the quality documentation and chain-of-custody traceability that regulatory and commercial clients require. Its client base spans food producers, shellfish harvesters, water utilities, agricultural operations, environmental compliance programs, and pharmaceutical facility managers throughout Southern California. AIM holds dual regulatory accreditation under ISO/IEC 17025:2017 and the California Environmental Laboratory Accreditation Program (ELAP). Its ELAP scope specifically covers microbiological testing of drinking water, microbiological testing of wastewater, inorganic chemistry of drinking water, and whole effluent toxicity of wastewater — the full suite required for regulatory submissions under the Safe Drinking Water Act (SDWA) and Clean Water Act (CWA). In addition, AIM is certified under the U.S. CDC Environmental Legionella Isolation Techniques Evaluation (ELITE) program, one of a limited number of commercial laboratories nationally recognized for rigorous Legionella spp. isolation and detection. The laboratory also satisfies all National Shellfish Sanitation Program (NSSP) requirements, qualifying it to perform regulated shellfish microbiological analyses for harvesters and processors participating in interstate shellfish commerce. Food safety testing is a cornerstone of AIM's work. The laboratory analyzes food matrices for a comprehensive panel of spoilage and indicator organisms, including aerobic plate count, anaerobic plate count, aerobic and anaerobic lactic acid bacteria count, Enterobacteriaceae count, fecal coliform count, generic Escherichia coli count, Pseudomonas spp. count, psychrotrophic plate count, Staphylococcus aureus count, total coliform count, and yeast and mold count. Pathogen detection covers the priority organisms regulated under the Food Safety Modernization Act (FSMA): E. coli O157:H7, non-O157 Shiga-toxin-producing E. coli (STEC), Salmonella spp., Listeria monocytogenes, Listeria spp., Bacillus cereus, Cronobacter sakazakii, Campylobacter spp., Shigella spp., Clostridium perfringens, and Yersinia enterocolitica. All food pathogen and indicator testing is conducted per FDA Bacteriological Analytical Manual (BAM), USDA Microbiology Laboratory Guidebook (MLG), and AOAC-validated methods. Shellfish sanitation testing represents a specialized capability that few laboratories can offer with NSSP accreditation. AIM tests shellfish meat for total and fecal coliforms per APHA Method III, shellfish growing waters per APHA Method II, and UV-processed waters for total coliforms per APHA Method II. The laboratory further tests shellfish and coastal water samples for Vibrio species — V. parahaemolyticus, V. cholerae, and V. vulnificus — pathogens of critical concern for public health and shellfish program compliance. Water testing at AIM spans drinking water, recreational water, wastewater, and industrial water systems. Core microbiological analyses include heterotrophic plate count (HPC), total coliform, fecal coliform, and E. coli using membrane filtration and enzyme-substrate technologies including Colilert®, Legiolert®, and Quanti-Tray®. For Legionella risk management in building water systems, cooling towers, and healthcare facilities, AIM applies the CDC ELITE program's spread-plate culture method with Legiolert® confirmation. Industrial water monitoring is supported through Biological Activity Reaction Tests (BARTs), a panel that characterizes acid-producing bacteria, denitrifying bacteria, iron-related bacteria, micro-algae, nitrifying bacteria, slime-forming bacteria, and sulfate-reducing bacteria. Nitrate analysis for drinking water is also available with rapid turnaround. All water testing operates under ELAP certification and follows SDWA and CWA compliance requirements. AIM's environmental testing program serves agricultural, municipal, and controlled-manufacturing sectors. For the agriculture industry, the laboratory tests crop inputs including compost teas, fish emulsions, blood meal, and bio-fertilizers for fecal coliforms and E. coli per Standard Methods 9221E and 9221F, with pathogen screening for E. coli O157:H7 and Salmonella spp. AIM is compliant with the California Leafy Green Products Handler Marketing Agreement (LGMA) testing requirements, making it a qualified testing partner for fresh produce growers and handlers in the state. Municipal biosolids are analyzed per EPA Methods 1680, 1681, and 1682 for fecal coliforms and Salmonella in sewage sludge. For pharmaceutical and biotechnology clients, AIM performs environmental surface monitoring via air settle plates, sponge sampling, and swab methods, sterility indicator testing using self-contained biological indicators (SCBIs) and spore strip immersion, and detection of objectionable microorganisms including E. coli, Listeria spp., Pseudomonas aeruginosa, Staphylococcus aureus, and Salmonella spp. Complementing its culture-based testing, AIM provides direct microscopic analysis of food, water, and environmental samples. Microscopic services cover the detection and identification of algae, iron bacteria, nematodes, protozoa, mold, and yeast, as well as differential bacterial staining techniques including Gram staining. These analyses are particularly valuable for root-cause investigations, water system diagnostics, and quality-assurance programs where cultural enumeration alone does not provide sufficient characterization. AIM also accepts subcontract testing from other laboratories, offering overflow capacity and accredited reference testing for methods outside the scope of referring labs. This combination of broad microbiological expertise, dual accreditation, specialized certifications for Legionella and shellfish, and a client-focused approach makes Applied Industrial Microbiology a credible and capable testing partner for regulated industries across Southern California.