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• Especially when using narrow-necked vessels, e.g. round-bottom flasks, an stirring tool with collapsible blades is used. Just like our collapsible-blade impeller BR 14.
• This blade impeller is ideal for dissolving and homogenizing in vessels with the following characteristics:
• Ideal vessel diameter: 180 mm
• Ideal ground clearance: 9 mm
• Ideal filling level: 180 mm
• Ideal volume: 4,600 ml
• The collapsible-blade impeller BR 14 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.

For the optimum loading of half petri dishes.
• Suitable for 38 half petri dishes with Ø 100 mm
• Equipped with 38 holders, height 70 mm, distance approx. 26 mm
• For use in upper basket

Machine affiliation:
G 7825
PG 8527
PG 8535
PG 8536
PLW 8636 [LAB / LAB MON]
PG 8504
PG 8583
PG 8583 CD
PG 8593
PLW 8505
PLW 8604
PLW 8615
PLW 8616
PLW 8617
PLW 8683
PLW 8683 CD
PLW 8693
PLW 6011
PLW 6111
PLW 7111

Advanced control technology and a small bath fluid reservoir enable highly dynamic temperature control systems to achieve rapid heat-up and cool-down. This gives you the ability to handle difficult temperature challenges quickly.
The PRESTO® systems are designed for precise temperature control as well as rapid temperature changes, making them ideal for reactor vessels, material stress tests, or temperature simulations. These instruments cover a working temperature of -92 to +250 °C with high cooling and heating capacity.
• USB connection
• For highly precise, external temperature applications
• Rapid heating and cooling
• Wide working temperature ranges without changing fluids
• Highest performance with small footprint
• Space-saving design optimizes space utilization in your lab
• Ethernet interface
• SD-Card slot
• RS232 / RS485 (optional) / Profibus DP (optional)
• Connections for alarm-output, Pt100 external sensor and standby-input
• Removable ventilation grid
• Highly precise ICC cascade temperature control
• Electronic level indication
• Integrated programmer
• Unsurpassed power and efficiency
• Space optimized design creates more room directly next to the units
• External Pt100 sensor connection

Advanced control technology and a small bath fluid reservoir enable highly dynamic temperature control systems to achieve rapid heat-up and cool-down. This gives you the ability to handle difficult temperature challenges quickly.
The PRESTO® systems are designed for precise temperature control as well as rapid temperature changes, making them ideal for reactor vessels, material stress tests, or temperature simulations. These instruments cover a working temperature of -92 to +250 °C with high cooling and heating capacity.
• USB connection
• For highly precise, external temperature applications
• Rapid heating and cooling
• Wide working temperature ranges without changing fluids
• Highest performance with small footprint
• Space-saving design optimizes space utilization in your lab
• Ethernet interface
• SD-Card slot
• RS232 / RS485 (optional) / Profibus DP (optional)
• Connections for alarm-output, Pt100 external sensor and standby-input
• Removable ventilation grid
• Highly precise ICC cascade temperature control
• Electronic level indication
• Integrated programmer
• Unsurpassed power and efficiency
• Space optimized design creates more room directly next to the units
• External Pt100 sensor connection

The muffle furnaces L 3/11 - LT 60/12 have been proven for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability.

Standard Equipment
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 - LT 60/12) for an optimal temperature uniformity
• Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
• Thermocouple type S (1200 °C)
• Ceramic heating plates with integral heating element which is safeguarded and easy to replace
• With lift door (LT)
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Controller with touch operation C550
• Solid state relays provide for lownoise operation

Option
• Chimney, chimney with fan or catalytic converter (not for L 1 and L 15)
• Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable process gases (not available in combination with chimney, chimney with fan or catalytic converter) not gas tight
• Manual or automatic gas supply system
• Port for thermocouple in the rear wall or in the furnace door

Laboratory refrigerators and freezers are expected to offer the highest level of safety and reliability. The precise electronic control, forced-air cooling system, and highly efficient insulation combine to deliver outstanding energy efficiency, keeping operating costs low while protecting the environment. The advanced components and precise regulation ensure optimal storage conditions for materials over the long term.

Product Features

Simple Operation
User-friendly solutions for daily use

• Built-in handle spanning the full height of the door
• Monochrome, 3-button electronic control interface
• Easy-to-clean stainless steel interior
• The door stays open at an angle greater than 90°
• Flush-mounted internal ceiling LED lighting

Compliance and Documentation
Built-in safety features to protect sensitive materials

• Temperature setting (calibration)
• Recording of minimum/maximum temperature values
The set minimum and maximum internal temperatures are saved by the device and can be easily viewed on the display
• Connectivity via retrofit (LAN or WiFi for BMS or SmartMonitoring system)
• Standard compliance: IEC 60068-3, IEC 61010-2-011

Safety and Reliability
Reliable storage due to consistent cooling performance, even under extreme environmental temperature conditions

• Temperature stability: up to ±3 °C for Refrigerator / ±5 °C for Freezer
• Alarm relay
Alarm signals are transmitted to the monitoring system, ensuring no deviations go unnoticed
• The door automatically closes when opened less than 90°
• Probe access port: 10 mm diameter
• Mechanical door lock
• Long lifespan

Technical Data

• Gross/net capacity: 871/702 liters
• External dimensions (W/D/H): 787/1017/2135 mm
• Internal dimensions (W/D/H): 489/638/1470 mm
• Energy consumption per year: 870 kWh
• Ambient temperature: +10 °C to +35 °C
• Heat emission: 1110 kJ/h
• Refrigerant: R 290
• Noise level: 60 dB(A)
• Frequency / voltage: 50 Hz / 220-240 V~
• Ventilated cooling system
• Automatic defrost
• Temperature range: -9°C to -30°C
• External casing/color: steel / white
• Interior casing: Chrome-nickel steel (1.4301 / AISI 304)
• Door/Cover material: steel
• Network connectivity option: SmartModule / retrofittable
• WLAN/LAN connectivity: optional
• Number of adjustable shelves: 4
• Shelves material: steel with plastic coating
• Usable shelf size (W/D): 480 / 638 mm
• Shelf load capacity: 60 kg
• Castors with arrestor at the front, fixed castors at the rear
• Probe access port: 1 x Ø 12 mm
• Door opening direction: right, reversible
• Gross/net weight: 166/149 kg

• Our half-moon impeller is specially designed for use in round-bottom flasks with NS 29/32 or larger. Combined with the vacuum-tight PTFE stirrer guide, you get a completely tight reaction system.
• The half-moon impeller HR 18 works best up to 1,700 ml.
• The half-moon impeller consists of a PTFE blade and a PTFE-coated stainless steel shaft. The stainless steel core ensures the stability of the stirrer shaft and secure attachment in the overhead stirrer without the risk of breakage of conventional glass stirrer shafts. The diameter in the clamping area is 6,5 mm; the stirrer shaft with the thick-walled PTFE coating has a diameter of 8 mm.
• Due to its anti-adhesive property (non-stick coating), the half-moon impeller is easy to clean and can be used up to a maximum application temperature of 250°C.

Completely automatic water softening unit with Mix Multi filter material, for softening of iron and manganic free drinking water and removal of organics, for bad water qualities and well water application that produces softened water with a residual hardness of 0.1° dH by means of the neutral exchange process with strong acid cation exchanger. Common salt is used for regeneration. Regeneration is carried out volume-dependently. Manual initiation of regeneration is also possible.
Scope of delivery:
• Fiberglass pressure tank and filling with cation exchanger
• Central control valve with 5 step regeneration program
• Container for dissolving salt
• Pre-assembled system ready for connection
Technical data:
• Capacity: (at 10°dH - tap water) 32 m³x°dH
• Flow rate: 0,32 m³/h
• Resin volume: 8 liter
• Capacity of salt container: 25 kg
• Salt consumption: 1,92 kg/reg.
• Water consumption: 0,08 m³/reg.
• Operating pressure: 2 to 6 bar
• Max. water temperature: 30°C
• Max. ambient temperature: 5 to 40°C
• Power supply: 220 V 50 Hz
• Dimensions: W 310 x D 430 x H 660 mm
• Piping connections: R1“

For optimum loading of 210 slides.
• Area of application: reprocessing laboratory glassware

Machine affiliation:
G 7825
PG 8527
PG 8535
PG 8536
PLW 8636 [LAB / LAB MON]
PG 8504
PG 8583
PG 8583 CD
PG 8593
PLW 8505
PLW 8604
PLW 8615
PLW 8616
PLW 8617
PLW 8683
PLW 8683 CD
PLW 8693
PLW 6011
PLW 6111
PLW 7111

This chemistry pumping unit has a wide range of applications like evacuation, evaporation and pumping of gases and vapors in chemical, biological and pharmaceutical laboratories. Typical applications are rotary evaporators, vacuum concentrators and vacuum drying ovens with high boiling solvents. The manual flow control valve regulates the effective pumping speed at the vacuum connection; the vacuum manometer offers an analog vacuum display. The separator at the inlet (AK), made of glass with a protective coating, retains particles and liquid droplets. The exhaust waste vapor condenser enables near-100-percent solvent recovery.

Performance features
• outstanding chemical resistance and superior vapor tolerance
• exceptionally high performance even at low vacuum
• excellent ultimate vacuum even with gas ballast
• manual vacuum control, analog vacuum display
• excellent environmental friendliness due to efficient solvent recovery

Advanced control technology and a small bath fluid reservoir enable highly dynamic temperature control systems to achieve rapid heat-up and cool-down. This gives you the ability to handle difficult temperature challenges quickly.
The PRESTO® systems are designed for precise temperature control as well as rapid temperature changes, making them ideal for reactor vessels, material stress tests, or temperature simulations. These instruments cover a working temperature of -92 to +250 °C with high cooling and heating capacity.
• USB connection
• For highly precise, external temperature applications
• Rapid heating and cooling
• Wide working temperature ranges without changing fluids
• Highest performance with small footprint
• Space-saving design optimizes space utilization in your lab
• Ethernet interface
• SD-Card slot
• RS232 / RS485 (optional) / Profibus DP (optional)
• Connections for alarm-output, Pt100 external sensor and standby-input
• Removable ventilation grid
• Highly precise ICC cascade temperature control
• Electronic level indication
• Integrated programmer
• Unsurpassed power and efficiency
• Space optimized design creates more room directly next to the units
• External Pt100 sensor connection

The highly dynamic temperature control systems PRESTO are designed for high-precision temperature control for a wide range of applications such as reactor vessels or material stress tests. Moreover, by using efficient components, the process systems can compensate exothermic and endothermic reactions exceptionally fast. Permanent internal monitoring and self-lubricating pumps ensure a long life-time. In addition, numerous interfaces offer many remote control possibilities across networks or for integration into higher-level control systems.
• External Pt100 sensor connection
• Alarm output
• Second external Pt100 sensor connection (accessory)
• Built-in 5.7’’ industrial color touchscreen
• Analog connections, RS485, Profibus DP (accessory)
• Integrated gas warning sensor, electrically wired and calibrated
• Intelligent warning and safety functions
• Pump pressure up to 3 bar

The highly dynamic temperature control systems PRESTO are designed for high-precision temperature control for a wide range of applications such as reactor vessels or material stress tests. Moreover, by using efficient components, the process systems can compensate exothermic and endothermic reactions exceptionally fast. Permanent internal monitoring and self-lubricating pumps ensure a long life-time. In addition, numerous interfaces offer many remote control possibilities across networks or for integration into higher-level control systems.
• External Pt100 sensor connection
• Alarm output
• Second external Pt100 sensor connection (accessory)
• Built-in 5.7’’ industrial color touchscreen
• Analog connections, RS485, Profibus DP (accessory)
• Integrated gas warning sensor, electrically wired and calibrated
• Intelligent warning and safety functions
• Pump pressure up to 5.5 bar

• Due to its blade dimensions, the pitched-blade impeller PR 30 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics:
• Ideal vessel diameter: 145- 290 mm
• Ideal ground clearance: 29- 58 mm
• Ideal filling level: 145- 290 mm
• Ideal volume: 2,400- 19,200 ml
• The pitched-blade impeller PR 30 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.

For optimum loading of 56 half petri dishes.
• Area of application: reprocessing laboratory glassware
• Suitable for 56 half petri dishes with Ø 100 mm
• Equipped with 56 holders, height 70 mm, distance apart approx. 26 mm
• For use in lower basket

Machine affiliation:
G 7825
PG 8527
PG 8535
PG 8536
PLW 8636 [LAB / LAB MON]
PG 8504
PG 8583
PG 8583 CD
PG 8593
PLW 8505
PLW 8604
PLW 8615
PLW 8616
PLW 8617
PLW 8683
PLW 8683 CD
PLW 8693
PLW 6011
PLW 6111
PLW 7111

• Due to its blade dimensions, the ringed pitched-blade impeller PR 31 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics:
• Ideal vessel diameter: 83- 165 mm
• Ideal ground clearance: 17- 33 mm
• Ideal filling level: 83- 165 mm
• Ideal volume: 400- 3,500 ml
• The ringed pitched-blade impeller PR 31 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.

For optimum loading of 56 half petri dishes.
• Area of application: reprocessing laboratory glassware
• Suitable for 56 half petri dishes with Ø 100 mm
• Equipped with 56 holders, height 70 mm, distance apart approx. 26 mm
• For use in lower basket

Machine affiliation:
G 7825
PG 8527
PG 8535
PG 8536
PLW 8636 [LAB / LAB MON]
PG 8504
PG 8583
PG 8583 CD
PG 8593
PLW 8505
PLW 8604
PLW 8615
PLW 8616
PLW 8617
PLW 8683
PLW 8683 CD
PLW 8693
PLW 6011
PLW 6111
PLW 7111

Double system, volume-controlled in compact design, for softening ironand manganese-free drinking water, in accordance with the Drinking Water Ordinance, fully automatic 5-stage central control valve type 9100 SE with intelligent control electronics made of gunmetal with adapter for the second pressure vessel. 2 pressure tanks made of corrosion-resistant GRP, including a high-quality cation exchanger. 1 cabinet brine tank with a sieve floor and a float valve (safety valve).

Technical data

• Maximum flow rate: 1.9 m³/h at 1.6 bar pressure loss
• Resin quantity: 2 x 5 litres
• Salt consumption: approx. 1.2 kg/reg.
• Operating pressure: 3 to 6 bar
• Max. water temperature: 40°C
• Max. ambient temperature: 5 to 40°C
• Dimensions of housing: approx. W 585 x D 555 x H 622 mm
• Electrical connection: 230 V 50 Hz
• Water connection: R 1’
• waste water connection R ½’

• Area of application: reprocessing laboratory glassware
• Suitable for test tubes up to 12 x 200 mm
• Divided into 6 surfaces
• Mesh width 9 x 9 mm
• For use in lower basket
• Including lid A 13

Machine affiliation:
G 7825
PG 8527
PG 8535
PG 8536
PLW 8636 [LAB / LAB MON]
PG 8504
PG 8583
PG 8583 CD
PG 8593
PLW 8615
PLW 8616
PLW 8617
PLW 8683
PLW 8683 CD
PLW 8693
PLW 6011
PLW 6111
PLW 7111
PLW 8505
PLW 8604

• Due to its blade dimensions, the ringed pitched-blade impeller PR 32 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics:
• Ideal vessel diameter: 113- 225 mm
• Ideal ground clearance: 23- 45 mm
• Ideal filling level: 113- 225 mm
• Ideal volume: 1,100- 8,900 ml
• The ringed pitched-blade impeller PR 32 has a total length of 400 mm and is made of stainless steel. Its stirrer shaft has a diameter of 8 mm.