Automatic Density Meter

The Rudolph DDM 2911 Plus / 2911 / 2910 / 2909 Density Meters have the features to meet all the present day industrial needs.

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Digital Refractometer

Rudolph have a large bouquet of various models of Refractometers to choose from. It varies depending on the application, the RI range, accuracy, budget among others.

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Digital Polarimeters

Rudolph manufactures various models of Polarimeters depending on accuracy, resolution, application, Temperature maintenance and budget. They vary from Autopol I to Autopol VI

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AUTOPOL VII Automatic Polarimeter

Rudolph’s latest in the series of Polarimeter - Autpol VII comes with fully automated sample loading combined with versatile sample loading, cell cleaning, rinsing, and drying built-In quartz plates automatically performing 3 point validation etc. comes as a total package.

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Portable Brix Meter

KEM, Japan Brixmeter model BX-1 is an automatic, digital system with an LCD display. The range is continuous between 0 – 85%Brix. The resolution is 0.1%Brix. This system is equipped with temperature compensation and has an IP-65 protection. This means that the system can be washed under the tap directly for cleaning the previous sample.

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Portable Density Meter

The KEM, Japan portable Densitymeter model DA-130N is a microprocessor controlled system with an LCD display. It operates out of the ASTM approved "oscillation of the U-tube" method. It displays Density, Temperature-compensated Density, Specific Gravity, Temperature-compensated Specific Gravity, Brix%, Alcohol Concentration, Sulfuric Acid Concentration, API degree, Baume degree, Plato degree, Proof degree etc.

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Portable Refractometer

KEM, Japan portable Refractometer model RA130 is a light-weight, easy-to-use and a handy system. It is a microprocessor controlled instrument with an LCD display. The sample can either be dripped on the prism or the prism of the system can also be dipped into the sample beaker to measure RI. Since the system is IP-65 protected the system can be directly immersed into the sample beaker also.

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Texture Analyser

Shimadzu Texture Analyser is ideal and effective for testing Food (Texture Profile Analysis), Pharmaceutical Substances, Packaging materials, Medical Devices etc.. It can be fixed with a variety of jigs and fixtures. For the Food Industries many parameters including Hardness, Brittleness, Adhesiveness, Cohesiveness, Elasticity, Rubberness, Chewability etc. can be obtained from the user friendly software Trapezium X Texture

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Universal / Tensile Testing Machine

Shimadzu Universal Testing Machine helps you to determine Tensile strength , Shear Test , Elongation Test for various materials which includes metals , plastics , rubber , wires etc .

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Contact Angle Meter

Kyowa Contact Angle Meter can perform Sessile Drop Method, Extension/Contraction method, Surface / Interfacial tension of liquids with Pendant drop method, Sliding Method & Dynamic Sliding Method. Model DMe-701 is the most automatic model and even stage movement and Droplet deposition are controlled through the PC. Right from the basest of models right upto Model DMe-701 are available depending on the application, capabilities, budget etc..

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Surface Tensiometer

Surface Tensiometers are widely used to check Surface Tension of Paints , Inks , Additives , Surfactant etc & same instrument is also used for the measurement of IFT - INTERFACIAL TENSION. The Interfacial Tension is mostly used in the study of quality of Transformer Oil.

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Mark-10 Corporation is a world-renowned manufacturer of Force and Torque measurement products. Their product profile includes Force gauges, Torque gauges, Test stands (manual), Test stands (motorised) and Force/Torque indicators.

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The Skalar San++ Analyzers are operating worldwide for hundreds of different applications. It is for decades the reliable "workhorse" for many routine laboratories, analyzing waters, soils, fertilizer, detergents, tobacco, pharmaceuticals, food and beverages such as beer, wine, milk, etc. Skalar methods meet standard methodology whenever possible, such as EPA, ISO, AOAC, Standard Methods, EBC, NEN, etc., etc. and are tested in our well equipped application laboratory. Skalar, Analyzers are supplied with detailed method description reagent make up and any information required to run a specific application trouble free for many years.

The amount of available Continuous Flow Analysis applications is nearly unlimited the most popular ones are listed below:

A.B.S. Creatine Nitrate
Acetaldehyde Cyanide Nitrite
Acetic Acid Density Nitrogen
Acidity Diacetyl Organic Carbon
Alkalinity Digoxin Penicillin
Aluminium Enzyme Activity Perborate
Amino Acids Ethanol pH
Amino Nitrogen Fluoride Phenol
Ammonia Formaldehyde


Amylase Formic Acid Phosphate
Amylose Fructose Polyphenols
Anionic Surfactants Galactose Potassium
Ascorbic Acid Glucose Predrisolone
Benzoic Acid L-Glutamic Acid Protein
Bicarbonate Glycerol Pyruvate
Bitterness Hardness Raffinose
Boron Hydrazine Rapidose
Bromide Hydrogen Sulphide Reducing Sugars
Caffeine Hydroxymethylfurfural Riboflavin
Calcium Hydroxyproline Silicate
Calcium pantothenate Iodine Sodium
Carbohydrate Iron Sorbitol
Carbon L-D-Lactic Acid Starch
Citric Acid Lactose Sucrose
Chloride Magnesium Sulfate
Chlorine L-Malic Acid Sulfite
Cholesterol Maltose Sulfur Dioxide
Cholinesterase Inhibition Manganese Tartaric Acid
Chromium Methanol Thiamine
Cobalt Methanamine Urea
Color Niacinamide Volatile Acidity
Copper Nickel Zinc
Creatine Nicotinic Acid And many more...

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The San++, "Flow Access" windows software package controls the complete analyser, with auto start-up, function control, and auto-scaling, pre-and post run sample dilutions, result calculation and statistics. 1 to 16 channels are handled simultaneous, with multiple samplers, and chemistries can be grouped for analysis. The package is extremely users friendly and easy to operate, and will integrate easily into a network.


The package has flexible sample tray layout, with sample auto numbering and addition during analysis run. Sample I.D.'s can also be downloaded from LIMS or read by the package.


Flow Access has preset Q.C. criteria, with real time peak and result information on screen, with zooming and rescaling and real time peak editing. All raw data is stored for evaluation and reruns. 

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The Skalar San++ range of detectors is the largest available, and comprises dual channel colorimetric detectors, the unique matrix correction detector with automatic background correction for difficult sample matrixes, but also covers a range of detectors for I.R., U,V., Fluorimetry, ISE, Flame Photometry, Refracto meters, Density meters, etc. The Skalar range of detectors cover all detectors required for the hundreds of Skalar field tested SFA applications available today.

Special features of the detectors for the San++ Continuous Flow Analyzer (CFA) are:

  • Compact design
  • Increased speed by bubble gating
  • Easy access to robust flow cells
  • Increased stability, sensitivity and auto-scaling by digital detectors
  • Automatic matrix, and blank correction.
  • Wide linear measuring range


Polarimetry Fundamentals

Polarimetry is a sensitive, nondestructive technique for measuring the optical activity exhibited by inorganic and organic compounds. A compound is considered to be optically active if linearly polarized light is rotated when passing through it. The amount of optical rotation is determined by the molecular structure and concentration of chiral molecules in the substance. Each optically active substance has its own specific rotation as defined in Biots law:

[α] = specific rotation, T = temperature,
λ = wavelength, α = optical rotation,
c = concentration in g/100ml, l = optical path length in dm.

Historically, polarimetry was performed using an instrument where the extent of optical rotation is estimated by visual matching of the intensity of split fields. For this reason, the D-line of the sodium lamp at the visible wavelength of 589nm was most often employed. Specific rotation determined at the D-line is expressed by the symbol:

alt or alt

and much of the data available are expressed in this form. Use of lower wavelengths, such as those available with the mercury lamp lines isolated by means of filters of maximum transmittance at approximately 578, 546, 436, 405, and 365nm in a photoelectric polarimeter, have been found to provide advantages in sensitivity with a consequent reduction in the concentration of the test compound. In general, the observed optical rotation at 436nm is about double and at 365nm about three times that at 589nm. Reduction in the concentration of the solute required for measurement may sometimes be accomplished by conversion of the substance under test to one that has a significantly higher optical rotation. Optical rotation is also affected by the solvent used for the measurement, and this is always specified.

It is not common practice to use other light sources, such as xenon or tungsten halogen, with appropriate filters, because these may offer advantages of cost, long life, and broad wavelength emission range over traditional light sources.

- USP<781> (Download PDF)

The polarimeter must be capable of giving readings to the nearest 0.01°. The scale is usually checked by means of certified quartz plates. The linearity of the scale may be checked by means of sucrose solutions.

- EP 2.2.7 (Download PDF)

The polarimetric method is a simple and accurate means for determination and investigation of structure in macro, semi-micro and micro analysis of expensive and non-duplicable samples. Polarimetry is employed in quality control, process control and research in the pharmaceutical, chemical, essential oil, flavor and food industries. It is so well established that the United States Pharmacopoeia and the Food & Drug Administration include polarimetric specifications for numerous substances. 


Research Applications
Research applications for polarimetry are found in industry, research institutes and universities as a means of:

  • Isolating and identifying unknowns crystallized from various solvents or separated by high performance liquid chromatography (HPLC).
  • Evaluating and characterizing optically active compounds by measuring their specific rotation and comparing this value with the theoretical values found in literature.
  • Investigating kinetic reactions by measuring optical rotation as a function of time.
  • Monitoring changes in concentration of an optically active component in a reaction mixture, as in enzymatic cleavage.
  • Analyzing molecular structure by plotting optical rotatory dispersion curves over a wide range of wavelengths.
  • Distinguishing between optical isomers.

In each of these applications, the AUTOPOL offers up to six discrete wavelength selections to observe the effect of wavelength upon an optically active substance.

Quality and Process Control Applications

Quality and process control applications, both in the laboratory or on-line in the factory, are found throughout the pharmaceutical, essential oil, flavor, food and chemical industries. A few examples are listed below. 

Pharmaceutical Industry

Determines product purity by measuring specific rotation and optical rotation of:

  • Amino Acids
  • Antibiotics
  • Dextrose
  • Steroids
  • Amino Sugars
  • Cocaine
  • Diuretics
  • Tranquilizers
  • Analgesics
  • Codeine
  • Serums
  • Vitamins

Flavor, Fragrance, and Essential Oil Industry

Utilizes polarimetry for incoming raw materials inspection of:

  • Camphors
  • Gums
  • Orange oil
  • Citric acid
  • Lavender oil
  • Spearmint oil
  • Glyceric acid
  • Lemon oil

Food Industry

Ensures product quality by measuring the concentration and purity of the following compounds in sugar based foods, cereals and syrups:

  • Carbohydrates
  • Lactose
  • Raffinose
  • Various starches
  • Fructose
  • Levulose
  • Sucrose
  • Natural monosaccharides
  • Glucose
  • Maltose
  • Xylose

Chemical Industry

Analyzes optical rotation as a means of identifying and characterizing: 

  • Biopolymers
  • Natural polymers
  • Synthetic polymers



J57AB/J157AB Refractometers for measurement of urea concentration in diesel engine additives


Designed specifically for the measurement of urea in diesel engine additives, in accordance with DIN 70071 and ISO 22241-2.

Basic Operation

The J57AB is a sub-model of the J57HA and most details on Technical Bulletin 915 apply. The J157AB is a sub-model of the J157 and most details on Technical Bulletin 911 apply. The differences between the AB models and the standard models are:


Both instruments have improved temperature performance to better than 0.02° C, meeting the requirements of DIN 70071 and ISO 22241-2.


The J57AB displays results in refractive index and the operator uses that result to calculate the wu number; and the J157AB has the calculations built-in to display and print the wu number.

Optional Accessories

The J Series AB refractometers can be supplied with the same range of accessories as the standard J Series, including:

  • Printers
  • Computer software
  • SD card drive
  • Barcode reader
  • Automatic sipping system
  • Autosampler

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Products and Accessories

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Why Agaram?

  • Instruments only from world-renowned manufacturers
  • Efficient after-sales service
  • Strong presence throughout India
  • Round the clock support via email and phone
  • Readily available instrument demonstration at a location of your choice

Demo Requisition


Seeing is Believing

Email us your details and we shall conduct a demo of our system at your facility.

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