Microtome and Water Bath Maintenance Log
Daily cleaning, water-bath temperature checks, and monthly microtome lubrication.
Document equipment maintenance, function checks, and corrective actions using manufacturer instructions and laboratory procedures. CLIA requires documented maintenance and function checks at the specified frequency, with acceptable function checks before patient testing. CAP’s public histology guide provides equipment-specific guidance; confirm applicable requirements against the laboratory’s current CAP checklist.
42 CFR § 493.1254(a)–(b)
Follow and document manufacturer maintenance and function-check instructions at least as frequently as specified. Function checks must meet established limits before patient testing. For modified or in-house equipment, or when manufacturer protocols are absent, establish and document appropriate laboratory protocols.
Brief source excerpt“Maintenance as defined by the manufacturer”
Brief source excerpt“Function checks must be within the manufacturer's established limits”
42 CFR § 493.1252(b)
Define, monitor, and document conditions essential to reliable operation, including applicable temperature, water-quality, humidity, and electrical-supply conditions. Follow manufacturer criteria where provided.
Brief source excerpt“These conditions must be monitored and documented”
42 CFR § 493.1282(b)(1)(i)
Document corrective actions when equipment operates outside established parameters or performance specifications. Link the action to the affected equipment, check, and record.
Brief source excerpt“The laboratory must document all corrective actions taken”
CAP’s public specimen-handling guide describes histology equipment practices. The guide is version 12.0, March 2025, and cites the December 26, 2024 checklist edition. These summaries are guidance; confirm mandatory wording and applicability in the laboratory’s current assigned CAP checklist.
CAP PUBLIC GUIDE · PRINTED PAGE 26
Address ventilation and formalin-exposure monitoring. Set station cleaning and equipment checks from the manufacturer’s instructions and laboratory procedures.
CAP PUBLIC GUIDE · PRINTED PAGE 41
Address paraffin temperature, heated components, forceps and surface cleaning, and reservoir or filter care.
Brief source excerpt“Temperature of embedding paraffin – monitored daily”
CAP PUBLIC GUIDE · PRINTED PAGES 37–40
Define maintenance responsibilities, reagent-change intervals appropriate to workload, and reservoir cleaning.
CAP PUBLIC GUIDE · PRINTED PAGES 44–45
Address reagent schedules, stain-quality controls, corrective actions, and preventive servicing.
Brief source excerpt“Establish a preventative maintenance program that includes annual service and emergency service.”
CAP PUBLIC GUIDE · PRINTED PAGES 54–55
Address cleaning, reagents, filters, and preventive servicing according to the instrument’s instructions and the laboratory’s procedures.
Sources reviewed October 3, 2026. Equipment models and manufacturer instructions determine the tasks, intervals, and acceptable limits for each log.
Daily cleaning, water-bath temperature checks, and monthly microtome lubrication.
Ventilation, work surfaces, sink and drain, fluid lines, and waste-system checks.
Paraffin, heated-surface, and cold-plate temperatures, plus cleanliness and function checks.
Reagents, paraffin, retort seals, cleaning cycles, and status or alarm checks.
Reagents, stations, racks and carriers, water and drains, and function checks.
Mounting medium, coverslip supply, dispensing path, slide path, and waste tray checks.