MICROPROCESSOR BASED PH/ION METER – 1016 is a solid state instrument designed to provide the precise Ion concentration, pH, mV, relative mV, &  Temperature measurements. The instrument uses the latest Microprocessor  technology and advanced engineering techniques so as to give enhanced accuracy and reproducibility. The system has user friendly prompts which guide you through out the measurement process.

The system has 20 soft touch membrane type keys for ease of operation. It has the storage facility for 999 samples, which are retained in the memory even when the system is switched OFF. Provision has been provided for attachment of centronics dot matrix  printer so that any of the stored results can be printed. Provision has also been provided for attachment of PS2 keyboard so that ease of typing and use of alphanumeric keypad. These meters are equipped with a large customized LCD (Liquid Crystal Display) with simultaneous display of the measured values for easy reading.

The instrument is extremely useful for agriculture and soil analysis laboratories, swimming pools, water quality control in boiler feed water, water works department, fertilizer plants, petroleum refineries, breweries, water purification plants etc.

pH
Range	-1.000 to 14.000 pH
Resolution	0.001 / 0.01 pH (user-selectable)
Accuracy	± 0.002 / ±0.01 pH
Calibration	1 to 5 points (standard buffers)
pH Buffer Set Options	USA : pH 1.68, 4.01, 7.00, 10.01,12.45 NIST: pH 1.68, 4.01, 6.86, 9.18 ,12.45 Bf1: pH 1.68, 4.01, 6.86, 10.01, 12.45 Bf2: pH 1.68, 4.01, 7.00, 9.18, 12.45 Custom entry Buffer Calibration
Relative Stability	± 0.002 pH/Hour
Temperature Compensation	-5 to 105 °C
mV/ Relative mV
Range	– 1999.9 to 1999.9 mV
Resolution	0.1 mV
Accuracy	± 0.2 mV
Calibration	mV offset up to ± 150 mV
Temperature
Range	-5.0 to 105.0 °C
Resolution	0.1 °C
Accuracy	± 0.3 °C
Calibration	Automatic Temperature compensation offset ±5.0°C
Sensor	Semi Conductor Type
Ion Concentration
Range	0.001 to 19999
Resolution (High resolution mode: ±500.0 mV)	0.001 : from 0.001 to 0.999,       0.01 : from 1.00 to 9.99 0.1 : from 10.0 to 99.9,       1 : from 100 to 19999
Resolution (Low resolution mode: ±1850.0 mV)	0.001 : from 0.001 to 0.099,      0.01 : from 0.10 to 0.99 0.1 : from 1.0 to 9.9 ,      1 : from 10 to 19999
Accuracy	± 0.5% of full scale for monovalent ions
Calibration	1% of full scale for divalent ions, 2 to 5 points
Min./ Max. Average Slope	10 mV/deacde / 75mV/ decade

Note : Specifications are subject to change due to continuous improvements.

Digital Potentiometer Model-118 is a precision instrument for potentiometric measurements. Results are displayed in millivolts on a direct digital readout by 3½ digit LED display. It is supplied with a set of 4 electrodes viz. Reference, Platinum, Silver & Glass. It is extremely useful for potentionmetric, ORP and acid base titrations.

This is useful instrument for Chemistry Labs, Pharmaceutical Industries, Colleges and University Labs etc.

Range	0 – ± 199.9 mV, 0 – ± 1999mV
Resolution	0.1 mV
Repeatability	± 1 mV
Accuracy	± 1 mV, ± 1 digit
Input Impedance	> 1012 ohms
Operating Temperature	10 °C – 45 °C
Display	3½ Digit 0.5″ 7-Segment LED Display with auto polarity indication
Power	230 V ± 10% AC, 50 Hz.
Dimensions (L x B x H)	275 x 175 x 75 mm (Approx.)
Weight	2.5 Kg (Approx.)
Accessories	Platinum Electrode, Reference, Glass Electrode, Silver Electrode, Electrode Stand, Clamp and Dust Cover

Note : Specifications are subject to change due to continuous improvements.

Microprocessor Potentiometer is a solid state instrument designed to provide the precise potentiometric measurements. The instrument uses the latest microcontroller technology and advanced engineering techniques so as to give enhanced accuracy and reproducibility. The system has user friendly prompts which guide you through out the measurement process. The system has 3 soft touch membrane type keys for ease of operation. The instrument have built-in stirrer and internal standard facility.

Model	120	121	122
Readout	3½ digit bright red LED display
Key Board	3 soft touch keys
Range	0 to ± 1999 mV
Resolution	1 mV
Accuracy	± 1 mV ± 1 digit
Internal Standard	Available
Operating Temperature	10°C to 50°C
Burette Assembly Option	Not Available	Available for 1 Burette	Available for 2 Burettes
Inbuilt Stirrer	Avialable at fixed RPM
Power supply	230V ± 10%AC, 50 Hz
Dimensions	278 x 248 x 101 mm (LxBxH)
Weight	2.5 Kg
Standard Accessories	Platinum Electrode – 1 No., Reference Electrode – 1 No., Dust Cover – 1 No., Electrode Stand – 1 No., Magnet Capsule – 1 No., Titration Beaker – 1 No., Instruction Manual – 1 No.
Optional Accessories	Silver Electrodes, Glass Electrode, Complete Burette Assembly

Note : Specifications are subject to change due to continuous improvements.

The most time consuming part of carrying out a microbial count is the actual counting process on petri-dishes. Digital Colony Counter is designed for quick and accurate counting of bacterial and mould colonies in petri dishes. Feature packed and easy to use, this is an indispensable bench top tool for the busy microbiologist.

It is designed for rapid and accurate counting of bacterial and mould colonies. Simply place the petri dish on the illuminated pad and touch the dish with the pen provided to mark each colony in turn. This causes a count to be registered on the digital display and an audible tone confirms each count made. Marking the dish with the pen avoids missing colonies or double counting. The digital count on the display can be reset manually any time by pressing reset key provided.

Optimum viewing of colonies is aided by peripheral glare free illumination graticuled disc provided in the instrument. The magnifier magnifies the colony area. This is an indispensable tool for the microbiologist.

Model	361	362	363
Display	3 Digit, 7-Seg. LED	4 Digit, 7-Seg. LED	6 Digit, 7-Seg. LED
Max. Counts	999	9999	999999
Dish Size	110 mm
Magnification	x 1.7 Surface Magnification
Power	230 V ± 10% AC, 50 Hz,
Dimensions	225 x 250 x 280 mm (L x B x H) (Approx.)
Weight	3 Kg (Approx.)
Accessories	Marking Pen, Magnifying Lens, Lens Holder, Operation Manual and Dust Cover

Note : Specifications are subject to change due to continuous improvements.

Microprocessor Colony Counter is a solid state microcontroller based instrument designed for quick and accurate counting of bacterial & mould colonies in petri dishes. The instrument uses the latest microprocessor technology and advanced engineering techniques so as to give enhanced accuracy and reproducibility.

The system has 6 soft touch membrane type keys for ease of operation. It has a ‘Reset’ key to reset the digital count. Any unwanted count can be removed by pressing the ‘Correct’ key. A built-in averaging facility allows the calculation of average colony counts using multiple dishes. It has the storage facility for 100 result-counts which are retained in the memory even when the instrument is switched off. A ‘Recall’ key is provided to retrieve the stored result colony counts from the instrument memory.

Optimum viewing of colonies is aided by peripheral glare free illumination graticuled disc provided in the instrument. The magnifier magnifies the colony area. This is an indispensable tool for the microbiologist.

Model	1361	1362	1363
Display	3 Digit, 7-Seg. LED	4 Digit, 7-Seg. LED	6 Digit, 7-Seg. LED
Max. Counts	999	9999	999999
Keyboard	6 soft touch membrane keys
Correction	Count correction facility available to cancel the unwanted count
Storage	100 Result-Count storage, even if the instrument is switched off
Average	Average mode facility available
Dish Size	110 mm
Magnification	x 1.7 Surface Magnification
Power	230 V ± 10% AC, 50 Hz,
Dimensions	225 x 250 x 280 mm (L x B x H) (Approx.)
Weight	4 Kg (Approx.)
Accessories	Marking Pen, Magnifying Lens, Lens Holder, Operation Manual and Dust Cover

Note : Specifications are subject to change due to continuous improvements.

Clarity of water is extremely important in products destined for human consumption. Suspension free water is also considered necessary for industries manufacturing beverage, food products etc. Similarly, minimum limits of turbidity are required to be observed in drinking water & sewage disposals.

Ei’s Digital Turbidity Meter and Nephelometer are ideal instruments for measurement of suspensions. They consist of a light source focused on a test tube containing the sample solution under test. The light, reflected at right angle to the focused light by the suspension in the solution, is detected by the photo electric detector, amplified and displayed on a 3½ digit LED display.

Note : Specifications are subject to change due to continuous improvements.

Designed in ABS Plastic to provide the rugged portability matched in fields with the accuracy demanded in the laboratory. A handy carrying case holds every thing needed in the field operation. The instrument measures DO of any solution in the fields, laboratory or plant.

Range	0 – 20 ppm
Resolution	0.1 ppm
Accuracy	± 0.1 ppm
Temp. Comp.	0 – 50 °C (Manual)
Calibration	Manual
Sensor	Gold/Silver Amperometric DO Probe
Display	3½ Digit LCD
Power	9 V DC Battery
Dimensions	180 x 85 x 30 mm (L x B x H) (Approx.)
Weight	250 gm (Approx.)

Note : Specifications are subject to change due to continuous improvements.

Digital Dissolved Oxygen Meter – 801 & 811 are available in benchtop models. These instruments are extremely useful for agriculture, soil analysis, fisheries, water quality control in boiler feed water, water works, breweries, water purification plants, chemical and pharmaceutical industries etc.

Model	801	811
Range	DO: 0 – 20 ppm Temp.: 0 – 60 °C	DO: 0 – 20 ppm –
Resolution	DO: 0.1 ppm Temp.: 0.1 °C	DO: 0.1 ppm
Accuracy	DO: 0.1 ppm Temp.: 0.2 °C	DO: 0.1 ppm –
Stirrer	Available	–
Temp. Comp.	0 – 50 °C (Manual)
Calibration	Manual
Display	3½ Digit Seven Segment LED
Power	230 V AC ± 10%, 50 Hz
Dimensions	275 x 135 x 75 mm (L x B x H) (Approx.)
Weight	3.5 Kg (Approx.)
Accessories	Gold/Silver Amperometric DO Probe, Set of DO Membranes, Temperature Probe (Model – 801), Stirrer and Magnetic Capsule (Model – 801), Operation Manual and Dust Cover,

Note : Specifications are subject to change due to continuous improvements.

Microprocessor Based Dissolved Oxygen Meter Mode – 1801 is a solid state instrument designed to provide the precise DO and Temperature measurements. The instruments uses the latest microprocessor technology and advanced engineering techniques so as to give enhanced accuracy and reproducibility. The system has user friendly prompts, which guide you throughout measurements process.

The system has 8 soft touch membrane keys for ease of operation, it has the storage facility for 1000 samples, which are retained in the memory even when the system is switched OFF. Provision has also been made for attachment of dot-matrix/thermal printer with RS232 serial interface so that any of the stored results can be printed.

This is extremely useful for agriculture and soil analysis laboratories, fisheries, water quality control in boiler feed water, water works department, breweries, water purification plants, chemical & pharmaceutical industries etc.

Range	DO: 0 – 20 ppm Temp.: 0 – 100 °C
Resolution	DO: 0.1 ppm Temp.: 0.1 °C
Accuracy	DO: ± 0.2 ppm Temp.: ± 0.2 °C
Temp. Comp.	0 – 50 °C (Auto/Manual)
Display	128 x 64 dots Graphical LCD Display
Keyboard	8 Keys, Soft Touch Membrane Type
Printer	Through RS 232 for serial printer using Dot Matrix/Thermal Printer
Storage	Upto 1000 Samples
Power	12V DC using 230±10% AC Adaptor
Dimensions	270 x 202 x 80  (LxBxH)
Weight	0.8 Kg (Approx.)
Accessories	DO Probe, Temperature Probe, DO Membranes, Stirrer, Magnetic Capsule, Power Adapter, Operation Manual and Dust Cover

Note : Specifications are subject to change due to continuous improvements.