BOD Incubator 171L — 5°C to 50°C ±0.5°C, Dual Door, EPA Wastewater Testing Ready

171-liter (6.1 cu.ft.) Biochemical Oxygen Demand incubator engineered to the 20°C ±1°C stability target required by EPA Method 5210B, Standard Methods for the Examination of Water & Wastewater 5210, and ASTM D888. 5-50°C operating range with Deluxe Digital PID Controller holding ±0.5°C accuracy. Dual-door design with transparent acrylic inner door for observation without cold-loss. LED interior with door switch. For municipal wastewater plants, environmental testing labs, pharmaceutical stability chambers, microbiology, and academic environmental engineering programs. $14,999 direct — versus $22,000-$35,000 for Thermo Scientific / VWR / Sheldon Manufacturing (SHEL LAB) equivalents.

What a BOD incubator does

Biochemical Oxygen Demand (BOD) is the fundamental measurement of organic pollution in water. EPA Method 5210B requires wastewater samples to be incubated at 20°C ±1°C for 5 days while measuring dissolved oxygen depletion — the more DO consumed by microorganisms, the higher the BOD, the higher the organic pollution load. This measurement drives NPDES permit compliance for every municipal wastewater treatment plant and industrial discharger in the United States. The BOD incubator is the temperature-controlled environment where those 5-day incubations happen, typically running dozens of 300 mL BOD bottles simultaneously at rigidly held 20°C.

Beyond BOD, the same 5-50°C range enables microbiology (30°C, 37°C), plant tissue culture (25°C), seed germination testing, entomology rearing, pharmaceutical stability (25°C ± 2°C / 60% RH constant), and any application requiring tight temperature control across a moderate range.

Specifications

EPA Method 5210B compliance

Method 5210B (5-day BOD test) requires the incubation environment to be 20°C ± 1°C for 5 days without variation greater than 1°C in any direction. Our ±0.5°C stability at 20°C setpoint provides a 2× safety margin against the ±1°C compliance requirement — critical for NPDES permit-compliant lab data.

Method 5210B, Standard Methods 5210, ASTM D888, and 40 CFR 136 discharge monitoring requirements are all satisfied by any BOD incubator holding 20°C ± 1°C. Our controller documentation + independent verification records (from your calibration provider) provide the audit trail wastewater plants need for state / EPA discharge monitoring reports.

Applications

Comparison to alternatives

Best for

• Municipal wastewater treatment plants — NPDES permit-required 5-day BOD compliance testing (small-to-medium plants: 1-10 MGD)
• Industrial discharge permit monitoring — food & beverage, pulp & paper, chemical plants, dairy, brewery + distillery
• Environmental testing laboratories — commercial contract labs running BOD + microbiology on client samples
• State + regional water quality labs — surface water monitoring, EPA + state DEQ analysis
• Pharmaceutical stability chambers — ICH Q1A(R2) 25°C accelerated + 30°C intermediate conditions
• Microbiology + clinical labs — 35°C + 37°C bacterial culture
• University environmental engineering + microbiology programs — teaching + research
• Seed testing laboratories — AOSA-certified germination testing
• Agricultural biotech / plant tissue culture — micropropagation facilities
• Contract research + testing organizations — high-volume multi-client work

Construction — built for years of continuous duty

• Double-wall construction — insulation between inner + outer walls minimizes heat exchange with lab ambient, reduces compressor duty cycle, extends equipment life
• Inner chamber: anodized aluminum (economical, corrosion-resistant) or highly polished SS 304 (recommended for microbiology + pharmaceutical stability applications where cleaning aggressively is common)
• Outer body: thick mild steel with powder-coated matte finish — hospital / lab professional appearance, cleans easily
• Dual door design: outer double-wall door with magnetic gasket + lock & key + inner transparent acrylic door for observation without breaking temperature during 5-day BOD incubations
• Shelves: 2 or 3 adjustable perforated SS shelves (specify at order) — perforation allows air circulation around samples for uniform temperature
• Sealed refrigeration system: high-efficiency compressor with built-in overload protection, thermal safety cut-out, and environmentally-friendly refrigerant (R-134a or R-600a)
• Integrated heating element: for setpoints above ambient without secondary equipment
• Forced-air circulation: internal fan drives uniform temperature distribution — critical for the ±1°C EPA requirement across a full BOD bottle rack
• LED interior lighting: door-switch activated auto on/off; LED is preferred over incandescent because it produces negligible heat that would perturb temperature control

Frequently asked questions

Why buy direct from SciMed

• ~50% of Thermo Precision 815 pricing — same 5-50°C range, ±0.5°C stability, dual door, PID digital controller
• Same-day US ship — no 8-12 week manufacturer lead time (critical for wastewater plants replacing failed units)
• 2-year parts + 5-year compressor warranty — exceeds Thermo's 1-year standard
• NPDES + EPA-ready — factory temperature verification documentation for state DEQ / EPA discharge monitoring reports
• Municipal + industrial procurement — SAM.gov, GSA, Net-30, PO acceptance, tax-exempt purchasing
• Pharma-ready — IQ/OQ templates, calibration documentation for stability chamber deployments
• International DDP — environmental + pharma markets globally
• Extended service contracts — for critical municipal / pharma applications

Shipping: Continental US LTL freight (lift-gate required, ~180 kg crated). International DDP ocean freight or DHL Express. Municipal / environmental / pharma procurement: clinic@scimedstore.com.