K. Roy & Co

K. Roy & Co

Lake Gardens, Kolkata, West Bengal
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Scientific Instruments

Our range of Scientific Instruments are made using superior quality raw material which ensure quality and long service life. The instruments offered by us are Muffle Furnaces, High Temperature Muffle Furnaces, Combustion Tube Furnace and BOD Bacteriological Incubators. These are available in various specifications and also at competitive rates, which suit both budget and requirements of clients.


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Digital Polarimeter
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Digital Polarimeter

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Automatic Polarimeter instrument used to measure specific optical rotation of optically active substance

Measuring optical rotation and sugar degree

Storage of three times results

Built in auto controlling system with servomechanism

Calculation of average values

Automatic Measurement

Measurement of dark colored sample

RS232 Interface


MakeK.ROYMeasurement Range-45° ~ + 45°, -120° ~ +120°ZAccuracya.)     ± ( 0.01° +  measuring  value  0.05%) 
b.)     ± ( 0.03°Z + measuring  value  0.05%)
Minimum  indicating  value0.001°, 0.01°ZRepeatabilitysample transmittance> 1% 0.002° (0.006°Z)DisplayLCDMonochromatic Light Source  (Sodium  Lamp)589.44nmLength of Test Tube(100mm  and 200mm) 1 eachPower supply220V / 50HzDimension (mm)730x 450x370Gross Weight

38 kg 

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UV VIS Double Beam Spectrophotometer
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UV VIS Double Beam Spectrophotometer

Approx Price: Rs 2.6 Lakh /Piece(s)

Minimum Order Quantity: 1 Piece(s)

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  • Medicine/Pharmaceutical Industry
  • Environmental Monitoring
  • Commodity Inspection
  • Food Inspection
  • Agricultural Chemistry
  • Teaching in Colleges & Universities
  • Metallurgy
  • Geology
  • Machine Manufacturing
  • Petrochemical Industries
  • Water and Waste Water Labs
  • Food and Beverage Labs



Optical System :  Double Beam, Grating 1200lines/mm
Wavelength range :  190nm -1100nm
Spectral Bandwidth :  1nm

Wavelength accuracy:  <=+/0.1nm(656.1nmD2),<=+/0.3nm(full wavelength range)
Wavelength repeatabiliy: 0.1nm
Photometric accuracy:   0.3%T(0-100%T)
Photometric Repeatability :  0.001Abs(0-0.5Abs)
Photometric range:  -3A-3A
Stray light:  <=0.02%T(220nm,.nal.340nm NaMO2)
Stability:   0.0004 A/H@500nm
Baseline Flatness:    0.001A
Noise:   0.0003A/H
Scanning speed:   Fast, Mid, Slow
Wavelength setting:   AUTO
keyboard:   Membrane keypad
Light source:   Deuterium & Tungsten lamp
Wavelength Resolution:   0.1nm
Photometeric Mode:   A,T,C
Detector:  Silicon Photovoltaic
Interface:   USB Port and parallel port (Printer)
Power:   AC220V/50Hz or AC 110V/60Hz
Dimension:   590X460X220mm
Drift:   <=+/0.0004A bs/h
Weight:  25kg


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Polarimeter (Imported)
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Polarimeter (Imported)

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This brand new type KPM 921 disk Polarimeter can be used in the chemical Industries,hospitals,colleges and universities and scientific research situations ,for measuring the organic substances with optical rotation. With the aid of the disk Polarimeter,the specific gravity,purity,concentration &  content of active materials (such as sugar solution turpentine oil & camphor) can be measured. For example, in the food industry ,it can be used to inspect the sugar content and measure the sugar content of food flavourings, In the clinic or hospital; it can be used to measure the sugar content and protein in urine. In the sugar refinery ,it can be used to inspect the concentration of the sugar solution in industrial processes .

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Microprossesor PH Meter
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Microprossesor PH Meter

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Product Details:
Type of PH MeterTable-Top

A research grade instrument with 128 x 64 Large Graphical LCD display having auto temperature compensation, auto buffer recognition along with accessories. Its features include 3 point calibration. Data Storage facility upto 1000 samples, complete with pH electrode, temperature probe, electrode stand, dust cover & Instruction Manual, computer interface with USB

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Moisture Analyzer
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Moisture Analyzer

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Moisture Analyzer

Basic Moisture Analyzers

Speed, Simplicity and Affordability. The new K.ROYBWH-50 and BWH-100Basic Moisture Analyzers combine high quality and durable construction into a sleek, compact design. The BWH-50 and BWH-100 offer dependable, accurate, results for a wide variety of applications.

Standard Features Include:

Flexible Performance The K.ROY BWH-50 and BWH-100 provide accurate results at either 0.1% or 0.05% readability. And with your choice of infrared or halogen heating, they are ideal for textiles, wastewater, ceramics, food and other applications that require IR heating elements and measurements to 0.1% or 0.05%. Simple to Operate Set up and operation is extremely easy. Just press and hold the temperature or time buttons to set drying parameters, add your sample and begin the test process. This makes the BWH-50 AND BWH-100 ideal for routine tasks performed by operators of all skill levels. Compact, Easy-to-Clean Design The compact footprint (17 x 13 x 28 cm) of the BWH-50 and BWH-100is designed to take up less space. Their easy-to-clean heating chamber is ideal for frequent use and inexpensive maintenance. K.ROY&CO ISO 9001:2000 Registered Quality Management System BWH-50 and BWH-100 Basic Moisture Analyzers The K.ROY BWH-100comes with an infrared heating element, while the uses halogen technology With its small footprint, the K.ROY BWH-50 and BWH-100 are compact enough to fit on any bench top Outline Dimensions 132 mm,283 mm,283 mm,132 mm,165 mm,165 mm,132 mm,283 mm,283 mm,132 mm,165 mm,165 mm


BWH-50 and BWH-100




(Std Dev) (g) 0.3% (3g sample),0.2% (10g sample),0.2% (3g sample),0.05% (10g sample)


0.1% / 0.01g 0.05% / 0.005g

Sample Size

3g to 20g typical, 0.5g min.

Interface Bidirectional



1 - 99 minutes, 30-second increments to 60 minutes

Heating Technology

Infrared (no glass) Halogen

Temperature Range

50°C to 160°C in 5° increments


100 to 240 VAC, 50/60 Hz


Range To capacity by subtraction

Operating Temperature

Range 5° to 40°C

Display Type

Custom backlit LCD


% moisture or % solids or weight (g), temperature, time

Pan Size (Diameter)

90 mm

Dimensions (W x H x D)

17 x 13 x 28 cm

Net Weight

2.3 kg

Shipping Weight

3.9 kg

Included Accessories

Sample Pans (Quantity 50) Standard

In Use Cover Standard

Sample Pan Handler Optional (PN 11113873) Standard

Models are CE,

CSA/UL and FCC approved

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Visible Spectrophotometer
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Visible Spectrophotometer

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Microprocessor Visible Spectrophotometer- 

 Technical Data and SpecificationsWavelength range: 340nm~1000nmBandwidth : 2nmLight source: Tungsten halogen lamp 12V/20WWavelength Accuracy: 2nmWavelength reproducibility (nm): 1nmSpectrum bandwidth (nm): 2nmStray light (T) : 0.5 %( at 360 nm)Light Current Drift: 0.5% / 3 minDark Current Drift: 0.2% / 3 minCell Holder: 10mmTransmittance repeatability (T) : 0.2%Noise (T): 100% Noise 0.3%, 0% Noise 0.2%Power supply: AC220V±22V, 50Hz±1HzDimensions: 56 x 48 x 29Net weight: 11.5kg APPLICATIONS
 Medicine/Pharmaceutical Industry
 Environmental Monitoring
 Commodity Inspection
 Food Inspection
 Agricultural Chemistry
 Teaching in Colleges & Universities
 Machine Manufacturing
 Petrochemical Industries
 Water and Waste Water Labs
 Food and Beverage Labs


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UV-VIS Single Beam Spectrophotometer
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UV-VIS Single Beam Spectrophotometer

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Matching up with the ever increasing requirements of the customers, we provide UV VIS Single Beam Spectrophotometer. This UV VIS Single Beam Spectrophotometer (Scanning) is extensively used in different industries for scanning purposes. To get the total satisfaction of clients, we provide this product at market leading price.




  • Large LCD screen (128*64) Dots
  • Can display and save 50 groups of data, 5 groups per screen
  • Data can be restored after a sudden power cut
  • Auto setting Wavelength
  • Tungsten lamp & deuterium lamp can be turned on/off individually to extend lifetime
  • Automatical WL Calibration and dark current getting with Scanning


Technical specifications:

  • Optical System: Single-Beam Grating 1200 lines/mm
  • Wavelength Range: 190-1000 nm
  • Bandwidth: 2 nm
  • Wavelength Accuracy: ± 1 nm
  • Wavelength Repeatability: 0.5 nm
  • Wavelength Setting: Auto
  • Photometric Accuracy: ±0.5 % T
  • Photometric Repeatability: 0.3 % T
  • Photometric Range: -0.3-3 A, 0-200 % T
  • Stray Light:  0.3 % T
  • Stability ± 0.002 A/h @500 nm
  • Display: 128 * 64 Dots LCD
  • Detector: Silicon Photodiode
  • Standard Cell Holder: 4-position 10mm cell changer
  • Light Source: Tungsten & Deuterium lamp
  • Output: USB Port & Parallel Port (Printer)
  • Power Requirements: AC 85 250 v
  • Dimension: 420 x 280 x 180 mm
  • Weight: 16.950 Kg
  • Net: 13.00 Kg


Standard configuration:


  • Main set: 1 No.
  • USB cable: 1 No.
  • Accessory kit including a 4 glass cell (1 cm): 1 No.
  • 2 quartz cell (1 cm): 1 No.
  • Operating manual software manual: 1 No.
  • Dust cover: 1 No.
  • Software CD: 1 No.
  • Software key: 1 No.
  • Power cable: 1 No.



  • Medicine/ pharmaceutical
  • Industry environmental monitoring
  • Commodity inspection
  • Agricultural chemistry
  • Teaching in colleges & universities
  • Metallurgy
  • Geology
  • Machine manufacturing
  • Petrochemical industries
  • Water and waste water labs
  • Food and beverage labs
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K. Roy & Co 58/32, Prince Anwar Shah Road, Lake Gardens,
Kolkata-700045, West Bengal, India

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Rishabh Roychowdhury ( Director )
08048601903Call Response Rate: 88%
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