IKA LR 1000.65 pH probe holder, for LR 1000, 0004663400
€867.35
% Manufacturer's RRP: €913.00 5% below manufacturer's RRP
- Stainless steel screw-in adapter for mounting a pH probe in the LR-1000 reactor lid
- External thread M 24/1.5, internal thread PG 13.5
- Two FFKM seals
- Compatible with the LR 1000 control system
- Immersion length 13.5 cm, total length 21 cm
Product information "IKA LR 1000.65 pH probe holder, for LR 1000, 0004663400"
The LR 1000.65 pH probe holder is a stainless steel screw-in adapter which is screwed into the lid of the IKA LR-1000 reactor in place of an NS-14/23 adapter and accommodates a pH probe with a PG-13.5 adapter head. The M 24/1.5 external thread seals against the lid via two FFKM seals, whilst the PG 13.5 internal thread accommodates the probe itself. IKA recommends using this in conjunction with the LR 1000.64 pH electrode to prevent damage to the sensitive electrode tip when immersing it in the reactor vessel; the holder therefore guides the probe in a controlled manner to the desired immersion depth. With a total length of 21 cm and an immersion length of 13.5 cm, the probe extends well into the lower part of the 1,000 ml reactor vessel, close to the zone where the anchor stirrer is also operating. This ensures good contact between the probe tip and the thoroughly mixed medium, rather than a measurement close to the surface, where concentration and temperature can vary slightly depending on the stirring intensity. The screw-in adapter thus fulfils the same mechanical function as a standard ground-joint adapter, but with a threaded connection instead of a ground joint. This makes it easier to remove the probe for cleaning or calibration compared to a ground-in glass adapter, where misalignment can compromise the seal. The two FFKM seals can withstand repeated screwing in and out over many calibration cycles.
Compatibility
This mount is also listed exclusively for the LR 1000 control system (Ident No. 0025001991); the LR 1000 basic system is not included, as pH measurement requires a corresponding display and control function, which only the control system provides. Neither this holder nor the associated pH electrode is therefore intended for the LR 1000 basic system. Checking the identification number of your own reactor system before ordering ensures you make the correct choice, particularly if both a basic and a control system are in use in the laboratory.
Technical details
| Total length of the adapter | 21 cm |
| Immersion length into the vessel | 13.5 cm |
| Weight | 0.3456 kg |
| Material | Stainless steel with two FFKM seals |
| External thread | M 24/1.5 |
| Internal thread | PG 13.5, for pH probe |
Scope of delivery
- 1 x LR 1000.65 pH probe holder
The LR 1000.64 pH electrode is not included and must be purchased separately.
Individual requirements and procurement service
The compatible electrode is the LR 1000.64 pH electrode with a BNC connector; both components are designed for use together with the LR 1000 control system. Our procurement service can assist you in selecting the right combination of holder, electrode and connection technology for your pH measurement in the reactor, including when retrofitting an existing reactor for continuous pH monitoring, rather than carrying out spot checks with an external handheld meter. Our team is also on hand to advise on the appropriate pH probe with a PG 13.5 adapter head for the holder.
Fits
The IKA LR 1000 control System (MPN 0025001991) is a compact laboratory reactor with a working volume of up to 1,000 millilitres, which combines stirring, heating and digital process documentation in a single unit. Unlike the simpler LR 1000 basic System, this model features a large TFT display showing all process values, supplemented by a connection for external pH measurement and digital interfaces for PC connectivity. The system is suitable for stirring and heating processes involving media with a viscosity of up to 100,000 mPas and operating temperatures of up to 120 °C, for example in chemical synthesis, formulation development or quality control. Thanks to the additional sensor technology, reactions can be monitored and documented much more closely than with a simple magnetic stirrer. Anchor stirrer with PEEK scrapers and torque trend measurement The supplied LR 1000.10 anchor stirrer is fitted with PEEK scrapers which continuously glide along the inner wall of the reactor vessel, thereby preventing product from depositing on the heated glass wall. The speed range extends from 10 to 150 revolutions per minute at a nominal torque of 3 Nm, suitable for media with a viscosity of up to 100,000 mPas. An integrated torque trend measurement indicates how the consistency of the stirred material changes during the process, for example when a solution becomes increasingly viscous or a solid dissolves. Heated reactor vessel with precise temperature control The LR 1000.3 reactor vessel has a maximum capacity of 1,000 millilitres; with a dispersing tool fitted, the minimum volume is 500 millilitres. The heating element at the base of the vessel has a heating power of 1,000 watts and heats the medium to operating temperatures of up to 120 °C, whilst the heating plate itself can reach temperatures of up to 180 °C. The supplied PT 100.30 temperature sensor measures the medium temperature with a resolution of 0.1 Kelvin; the control accuracy is ±0.2 Kelvin, and the setting accuracy is ±1 Kelvin. TFT display, pH connection and digital interfaces A large TFT display shows speed, temperature and other process values in real time. An external pH electrode can be connected via a BNC socket, covering a measurement range from 0 to 14 pH with a resolution of 0.1 pH, allowing acid-base reactions to be monitored directly in the reaction vessel. In addition, the system features an integrated weighing function with a weighing range of up to 2,000 grams at a resolution of 1 gram. An RS 232 interface, a USB port (Micro-B) and Bluetooth are available for connection to a PC for process documentation. Vacuum operation and safety concept The system is designed for operation under vacuum down to 25 mbar; a vacuum valve assembly controls the connection to a vacuum pump. Two hose connections also allow an external cooling medium with a minimum temperature of 3 °C to be connected, for example to cool exothermic reactions in a controlled manner. An adjustable safety circuit monitors the temperature within a range of 47 to 225 °C with a tolerance of ±10 to ±20 Kelvin and automatically switches off the heating if necessary. If the reactor vessel or lid is removed during operation, a safety shut-off is triggered immediately. Difference from the LR 1000 basic System Within the LR 1000 series, the control System is the version with more comprehensive data logging: Whilst the simpler LR 1000 basic System is primarily designed for stirring and heating, the control System adds pH measurement, an integrated weighing function and digital interfaces for process documentation. Anyone requiring comprehensive documentation of temperature, pH and torque curves, for example for internal quality records, is better served by this version than by the basic model. Typical applications The LR 1000 control System is suitable for stirring, heating and documentation tasks on a 1-litre scale, wherever process data needs to be recorded in a traceable manner: Chemical syntheses with temperature control and concurrent pH monitoring Formulation development in the cosmetics and pharmaceutical industries involving process parameters subject to documentation requirements Vacuum-assisted concentration or degassing of solutions and dispersions Polymerisation experiments in which torque trends and viscosity increases are to be monitored simultaneously Quality control with documented temperature and pH profiles for internal release processes Practical courses and further training in which students learn how to operate a fully equipped laboratory reactor Formulation screening, in which several batches with different temperature profiles are compared sequentially Technical details Max. usable volume1,000 ml Minimum volume with dispersing tool500 ml Speed range10 to 150 rpm Rated torque3 Nm Max. viscosity100,000 mPas Operating temperature (medium) max.120 °C Max. heating temperature (heating plate)180 °C Heating power1,000 W Control accuracy (medium)±0.2 K Setting accuracy of target temperature±1 K Achievable vacuum25 mbar Weighing rangeup to 2,000 g, resolution 1 g pH measurement range0 to 14 pH, resolution 0.1 pH Material (parts in contact with the medium)Borosilicate glass 3.3, AISI 316L stainless steel, PEEK, PTFE, FFPM Connections on reactor lid2 x NS 29, 2 x NS 14, 2 x GL 14 DisplayTFT display InterfacesRS 232, USB (Micro-B), Bluetooth Dimensions (W x H x D)443 x 360 x 295 mm Weightapprox. 23 kg Mains voltage230 V, 50/60 Hz Power consumption1,200 W Permissible ambient temperature5 to 40 °C Permissible relative humiditymax. 80 % Scope of delivery 1 x IKA LR 1000 control base station 1 x LR 1000.3 reactor vessel 1 x LR 1000.10 anchor stirrer with PEEK scrapers 1 x PT 100.30 temperature probe with mounting bracket 1 x support rod, 16 mm diameter 2 x hose connectors for cooling medium 1 x USB cable (USB-A to Micro-B, 2 m) Individual requirements and procurement service To help you expand your LR 1000 control System, our procurement service can assist you with additional accessories, such as a pH electrode with a BNC connector, further reactor vessels or dispersing tools for the open lid ports. We are also happy to advise you on spare parts or any queries regarding software integration with your existing laboratory infrastructure. Further information and contact details can be found on our procurement service page.