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Rispri LabsENGINEERING A CIRCULAR FUTURE
NABL ACCREDITED ISO/IEC 17025:2017 FSSAI RECOGNIZED CPCB & SPCB COMPLIANT

Microbiological & Pathogen Testing Laboratory

Advanced microbiological diagnostics for drinking water, industrial process water, food, workzone air bio-burden, and cooling tower Legionella pneumophila culture.

Accredited Microbiological Testing Scope

Precision pathogen isolation, bio-indicator quantification, and regulatory compliance reporting per Bureau of Indian Standards (BIS) and international protocols.

Water & Wastewater Microbiological Analysis

Detection and enumeration of indicator organisms in drinking water (IS 10500), packaged mineral water (IS 14543), ETP/STP treated effluent, and process water.

  • Total Coliform Count (MPN / Membrane Filtration)
  • Escherichia coli Detection & Quantification
  • Faecal Streptococci & Enterococci
  • Pseudomonas aeruginosa Isolation
  • Sulfite-reducing Anaerobes (Clostridium perfringens)

Cooling Tower & HVAC Legionella Culture

Quantitative culture of Legionella pneumophila (ISO 11731) in industrial cooling towers, HVAC evaporative condensers, hotel plumbing, and hot water systems.

  • ISO 11731 Direct & Concentrated Culture
  • Serogroup 1 vs 2-14 Differentiation
  • Biocide Efficacy Testing against Biofilms
  • Risk Assessment & Disinfection Certification

Cleanroom & Workzone Air Bio-Burden

Environmental air microbial monitoring for pharmaceutical cleanrooms, food processing plants, hospital operation theatres, and industrial laboratories.

  • Active Air Sampler Volumetric Air Monitoring
  • Passive Settle Plate Bacterial & Fungal Count
  • Surface Contact Plate / Swab Bio-Burden
  • ISO 14644 & GMP Cleanroom Classification

Food, Beverage & Dairy Pathogen Profiling

Microbiological safety testing for packaged foods, dairy products, beverages, and raw agricultural commodities per FSSAI regulations.

  • Salmonella spp. & Shigella spp. Isolation
  • Staphylococcus aureus Coagulase Positive
  • Yeast & Mold Count (YMC)
  • Total Viable Aerobic Count (TVAC / TPC)

Standard Testing Specifications & Limits

Key microbiological parameters, test standards, and permissible compliance thresholds.

Test Parameter Test Method Standard Drinking Water (IS 10500:2012) Packaged Water (IS 14543) Typical Turnaround Time
Total Coliforms IS 1622 / IS 5401 / ISO 9308-1 Shall not be detectable in 100 ml Absent / 250 ml 24 to 48 Hours
Escherichia coli IS 1622 / ISO 9308-1 Shall not be detectable in 100 ml Absent / 250 ml 24 to 48 Hours
Faecal Streptococci IS 1622 / ISO 7899-2 Shall not be detectable in 100 ml Absent / 250 ml 48 Hours
Pseudomonas aeruginosa IS 13428 Annex D / ISO 16266 Not applicable Absent / 250 ml 48 Hours
Sulfite-reducing Anaerobes IS 13428 Annex C Not applicable Absent / 50 ml 48 Hours
Legionella pneumophila ISO 11731 Culture Method Target: <100 CFU / L (Cooling Tower) Absent / 1000 ml 7 to 10 Days
Yeast & Mold Count IS 5403 / ISO 21527 Not applicable Absent / 250 ml 5 Days

Sterile Sample Collection & Transport Guidelines

Microbiological samples require strict sterile handling to prevent external contamination and cell degradation.

  • Must be collected in factory-sterilized 500 ml / 1000 ml PET/Glass bottles containing sodium thiosulfate (for chlorinated water neutralisation).
  • Bottles must be transported in insulated ice-chests maintained at 2°C to 8°C.
  • Sample analysis must commence within 6 hours of collection (maximum 24 hours under cold-chain storage).