Miele PG 8535

The PG 8535 serves laboratories that return glassware to service daily: research, microbiology, biotechnology, and analytical laboratories, as well as industrial and environmental ones. Laboratory technicians load test tubes, pipettes, narrow-necked flasks, bottles, and Petri dishes into coded mobile units, and the control automatically recognises each unit. A single cycle holds up to 1,600 test tubes or 96 pipettes, and programmes for organic residues, inorganic residues, plastics, pipettes and oils let each load follow a matching routine. For oily residues, OEL configurations pair oil- and grease-resistant seals with the LAB-OEL programme. Laboratories with deionised water on hand can choose AD configurations, while ADP configurations add a feed pump for pressureless deionised water.

Instrument reprocessing is also within its range. The maximum load includes 4 DIN sieves, 2 AN sets, 1–2 MIC sets, 48 GYN specula, and an ophthalmology programme. Hospital departments and outpatient surgery units that reprocess instruments alongside glassware can use the same cabinet, with its user levels, free programme places, and process documentation.

Operators work at four user levels, from simple operation to advanced programming, which suits rooms where several staff share one machine. The 4-line display and the freely programmable PROFITRONIC+ control let routine loads run from stored programmes, while the 30 free places hold routines for specialised glassware. Network and serial printer interfaces log each run in the laboratory's records, and A0 value control provides a running measure of the disinfecting effect. Under-counter dimensions of 700 × 900 × 820 mm place the machine beneath a bench or counter, and noise stays below 70 dB(A) during washing and drying.

Two temperature sensors watching every cycle

Two redundant temperature sensors read the cabinet's heat throughout each cycle, so no single sensor is the only evidence of what a load experienced. A0 value control sits alongside them and tracks the disinfecting effect of the temperature and holding time reached. For a laboratory that records its cleaning conditions, each thermal phase has two readings.

Spray arm speed under watch.

A sensor follows the spray arms' rotations, and the control monitors that speed from the first rinse to the last. Spray arm speeds are adjustable, so a programme can match arm speed to the load, whether the cabinet holds narrow-necked flasks or racks of test tubes. Because the control monitors speed, it registers an arm that slows or stops during the cycle.

Recognised loads and fault protection

The control automatically recognises coded mobile units via a magnetic strip and applies protection against load faults. Foam development in the circulation circuit also has its own protection. Each cycle therefore starts with load recognition and runs under both safeguards.

HEPA-filtered drying air

The drying unit passes 60 m³/h of air through an EU4 pre-filter and an H13 HEPA filter with a filtration rate above 99.95% under EN 1822. Glassware dries in filtered air, and the user sets the drying temperature from 60 to 115 °C and the drying time from 1 to 240 minutes. A 0.3 kW blower and a 2.3 kW heating coil drive the process.

Metered cleaner and neutraliser

Two integrated metering pumps draw neutraliser and cleaner from two 5 l reservoirs in a drawer, so the programme adds chemistry by pump. A further connection takes a DOS G60 or G10 module, and DOS 2 or DOS 4 modules extend dosing for liquid media. Dosing modules for liquid media are also available as options.

Glass shard filtering in the wash circuit

A four-fold filter system combines a flat filter, a coarse filter, a glass shard filter and a micro-fine filter. The wash circuit catches fragments and residues, and a flowmeter monitors the water entering the cabinet. A fresh water system changes the water after each cleaning phase, so every phase starts with clean water.

Programmes fitted for different loads

The control holds 17 standard cleaning and disinfection programmes, 15 service programmes and 30 free programme places. Named laboratory programmes cover plastics, pipettes, organic residues, inorganic residues, and oils; additional programmes cover ophthalmology and continuous operation. Free places hold routines written for a laboratory's own glassware.

Documented runs and remote service

A network interface and a serial printer interface support process documentation so that you can record each run. Remote service capability is built into the control. Four user levels run from simple operation to advanced programming.

Filter lives that suit upkeep planning.

The EU4 pre-filter has a service life of 100 hours, and the H13 HEPA filter has a lifetime of 500 hours,  providing a clear basis for replacement planning. The cleaner and neutraliser come from two 5 L reservoirs, and a Profi Monobloc water softener treats the incoming water; the filters, arms, and seals are accessible for maintenance.

Under-counter stainless steel cabinet

The PG 8535 is an under-counter unit without a lid, with a stainless steel wash cabinet and stainless steel outer cladding. It measures 700 × 900 × 820 mm, with a width of 90 cm. An optional stainless steel lid raises the height to 850 mm, and the depth with the door open is 1,265 mm. The unit weighs 113–114 kg.

Circulation pump at 400 l/min

The circulation pump delivers up to 400 l/min to the rinsing arms and injector system. You can adjust spray arm speeds so each programme can set the arm speed to suit the load in the cabinet.

Spray arms and injector system

Two rinsing arms work in the cabinet, and a third arm sits in the upper basket. An injector system serves hollow cavities such as pipettes and narrow-necked vessels, and compatible accessories, injection hoses and water adapters extend it.

Fresh water system with steam condenser

A fresh water system changes the water after each cleaning phase. A steam condenser with spray technique condenses vapour from the cabinet, takes its own cold water line and has a flow rate of about 2–4 l/min.

Four-fold filter system

The wash circuit carries a flat filter, a coarse filter, a glass shard filter and a micro-fine filter. The fine and coarse washing-system filters are compatible accessories, and the filters are accessible for maintenance.

Profi Monobloc water softener

A Profi Monobloc water softener is fitted as standard and treats the incoming water. Cold and hot water lines feed the cabinet, and the fresh water system changes the water after each cleaning phase.

Integrated metering pumps

Two integrated metering pumps feed neutraliser and cleaner. A drawer holds two 5 l reservoirs, and a further connection accepts a DOS G60 module for liquid cleaner or a G10 module for rinse or neutraliser. External dosing modules DOS 2 and DOS 4 are compatible options.

Drying unit with a 60–115 °C range

The drying unit draws 2.6 kW total, consisting of a 0.3 kW blower and a 2.3 kW heating coil. Air capacity is 60 m³/h. The drying temperature is set between 60 and 115 °C in 1 °C steps, and the drying time between 1 and 240 minutes in 1-minute steps.

EU4 pre-filter and H13 HEPA filter

Drying air passes an EU4 pre-filter with a filtration rate above 95% and a service life of 100 hours. It then passes an H13 HEPA filter with a filtration rate above 99.95% under EN 1822 and a lifetime of 500 hours.

PROFITRONIC+ control

PROFITRONIC+ is a freely programmable control with a 4-line display. Four user levels range from simple operation to advanced programming, and 30 free programme places store programmes for specific loads.

A0 value control and redundant sensors

A0 value control tracks the disinfecting effect of the temperature and holding time reached in a thermal phase. Two redundant temperature sensors provide the readings, and a peak-load cut-off and resettable heating limiter protect the heating circuit.

Water connections for AD and ADP configurations

The unit takes one cold water line, one cold water line for the steam condenser and one hot water line. AD configurations add a deionised water connection, and ADP configurations add a feed pump for pressureless deionised water at 0.05–0.3 bar. OEL configurations carry oil- and grease-resistant seals for the LAB-OEL programme.

Electric door lock

An electric door lock secures the cabin door. A resettable heating limiter and a peak-load cut-off add protection to the heating circuit.

Maximum load by item type

The maximum load for each item type is 4 DIN sieves, 2 AN sets, 1–2 MIC sets, 48 GYN specula, 37 narrow-necked flasks, 96 pipettes or 1,600 test tubes. Compatible accessories include adjustable baskets and inserts for tubes, bottles, pipettes, and Petri dishes.

Interfaces for documentation and remote service

A network interface and a serial printer interface support process documentation, and PC or printer connectors are compatible accessories. Remote service capability is built into the control.

The PG 8535 suits laboratories that run mixed glassware loads daily and want to monitor each cycle as closely as it runs. Control is where its design focuses: two redundant temperature sensors, spray-arm monitoring, load recognition, and documented runs give every cycle a trail of evidence. Teams that plan upkeep can work to set filter lives of 100 hours for the pre-filter and 500 hours for the HEPA filter, with two 5 l reservoirs feeding the metering pumps. Departments that add instrument sets will find DIN sieve, MIC set and GYN speculum capacity alongside an ophthalmology programme. The unit runs on 3N AC 400 V at 50 Hz and measures 700 × 900 × 820 mm.