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 VI Automatic Polarimeter

Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic life One day however a small line of blind text by the name of Lorem Ipsum decided to leave for the far World of Grammar.

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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 DensityMeter

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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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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Roughly speaking Brix is a scale which denotes sugar in distilled water weight/weight.  Actually speaking, Brix denotes the Sucrose in distilled water.  But we generally take it as total sugar dissolved in a liquid sample (juice for example) due to the fact that the other sugars are negligible.


This concept has found many takers in the soft drink industries where the Refractometer is used to find out Brix to control the sugar which is the costliest ingredient in an aerated drink or juice.




There is a known correlation between the Brix and the gelatin sol (colloidal suspension of very small solid particles in a liquid medium).  To arrive the gelatin concentration from Brix, one has to multiply the Brix value by 0.8.


For example if the Brix value was 20, then the gelatin would be 16% gelatin by weight.


The hand-held Brixmeters are a useful tool in the shop-floor of gelatin industries.




The Ripeness of fruits is determined by the Brix value of its juice.

Brix is being used as a major factor to determine the harvest time. Mangoes and Grapes are two fruits where the Brix is being used widely to determine when they are to be harvested. This is due to the fact that they are commercial crops.

Brix in Grapes has more application as different types of wine demands Grapes with varied ripening levels.

There are also many NIR systems available in the market to determine the ripeness of fruits. They also use the data from a Brixmeter to build-up a robust calibration. The major problem with an NIR could be the different hues the fruits might take and this has to be factored in before we could have a decent correlation.




Three samples were tested for Brix. Sample no. 1 was a commercially available Mango juice brand X, sample no. 2 was also a mango juice of brand Y and sample no. 3. Ravi brand Tea. The tea was mixed with milk and sugar. The samples were tested in hand-held Brixmeter and portable Densitymeter.


After some pondering, the following conjenctures were arrived at.

a) While the Hand-held Brixmeter finds out the Brix through RI, the portable Densitymeter finds out the Brix through the Density of the sample

b) While Brand X was a Mango juice, the Brand Y that we tested was Apple juice.

c) The reason why Ravi's tea showed such a big jump in Brix when tested out of Density was that the milk and the tea dust or leaves boiled in water have all added to its density apart from the sugar added.





Brand X



Brand Y



Tea served by Ravi






To find out the RI value of Glycerine; which is very much hygroscopic in nature through digital refrectometer its important that sample has to analyse at 20 Deg C and homogeneous temperature has to maintain through prism surface as well pressure (cover) for avoiding the fluctuation in RI readings.



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