Yatherm Scientific manufactures and supplies customized and standard exclusive line of Manual, Semi-Automatic & High-Speed Automatic Polarimeter, This instrument is designed for measuring the optical rotation of substances. Through measuring the optical rotation, the concentration, content, and purity of the substance can be determined. The instrument is widely used in sugar refining, pharmaceuticals, petroleum, food, chemical and a lot of industrial sectors and related institutions of colleges and research institutes.
As a polarimeter manufacturer covering three distinct tiers — a classic manual scale instrument, a semi-automatic touchscreen unit, and a high-speed fully automatic system — Yatherm's range is built so a small QC lab and a full pharma production facility can both find a polarimeter that matches their throughput, budget, and precision requirement without going to three different suppliers.
Manual Polarimeter
It is Easy-to-use Manual Polarimeter, the measuring range is from -180 to +180 degrees. Yatherm Scientific instrument is suitable for measuring the optical rotation of optically active substances with Accuracy: 0.05 degrees.
This is the classic disc polarimeter format — a graduated circular scale read through a magnifier against a sodium lamp light source, rather than a digital display. It's the entry point into optical rotation testing: lower cost than the automated models, no touchscreen or software to learn, and well suited to teaching labs, small QC setups, and any application where a trained operator reading the scale by eye is perfectly adequate.
Applications
Polarimeter is a Scientific Equipment that measures the optical rotation of substances. It is generally used in the analysis of the concentration, content & purity of substances.
Agriculture: In agriculture it has a different application that analyzes the content of Agriculture Antibiotics, Farm Hormone & Microbial Pesticides.
Medicine: In pharmaceutical industry it helps in the analysis of Antibiotics, Vitamins, Glucose & Indian Ayurvedic Medicine or Pharmaceutical Research.
Food: In Food Industry it is used in Sugar, Soy Sauce Production Control & Inspection.
Oil: It analyses Mineral Oil & Monitors Petroleum Fermentation.
Perfume: It is used in the analysis of Essential Oils.
Science & Education: Indian Institutions of higher Scientific research Like IIT uses in experimental testing.
Semi-Automatic Polarimeter
The digital polarimeter step up from the manual model is the semi-automatic POL-SA 200, built around a 5-inch touch screen instead of a scale and magnifier. It's designed for labs that need faster readings, digital record-keeping, and GMP-compliant timestamping without moving all the way to a fully automated, high-throughput system. It reads optical rotation, specific rotation, and concentration on the International Sugar Scale, with four measurement modes and up to 3-point calibration for tighter accuracy across different sample types.
High-Speed Automatic Polarimeter
Yatherm Scientific instrument applies to the unique and state-of-art control technology, equipped with a quality prism used for all our customers. These are the top models that come with GMP compliance, fulfill WHO Norms required to use in pharmaceutical and food industries.
These Yatherm instruments not only enhance the response speed only, but also the instrument's measurement time, and minimum transmittance when the polarimeter used for testing samples.
High speed, efficiency and accuracy features, which makes the instrument a quality product in comparison to the traditional polarimeter. Yatherm Polarimeter can customize up to 300 commonly used measurement methods that are pre-stored in the system. This Instrument can easily access to the internet with the help of IT professionals.
This top tier is the fully automatic polarimeter line (models POL-568, POL-533, and POL-532), aimed squarely at polarimeter for pharma and high-volume food/sugar industry use, where GMP data integrity, multi-point automatic calibration, and network connectivity for reporting matter as much as raw measurement accuracy.
Key Innovations
Integrated Peltier Temperature Control: We have used Peltier technology for temperature monitoring that enhances measuring accuracy and stability.
Multifunctional Measurement Modes: Yatherm Polarimeter supports specific rotation, concentration, sugar content, and custom modes to meet different parameters testing.
LED Cold Light Source: Yatherm Polarimeters are used with LED cold light source that replaces traditional sodium lamps and halogen lamps, offering a stable and energy-efficient light source.
WiFi Printing and Data Management: Our software supports WiFi printing for test results & it also supports data management.
Multi-level Access Control: Three layers of password protection with different user access for safety of data.
10-inch Touch Color Screen: Touch panels are intuitive with advanced software system.
Automatic Calibration System: Yatherm Polarimeters don't require manual calibration, as they have an automatic calibration feature to ensure the accuracy and repeatability of each measurement.
Not sure which tier fits your testing volume — manual, semi-automatic, or fully automatic? Talk to our team here and we'll match a model to your sample type, accuracy requirement, and regulatory needs.
Frequently Asked Questions: Polarimeters
What is a polarimeter used to measure?
A polarimeter measures the optical rotation of a substance — how much it rotates the plane of polarized light passing through it — and from that determines concentration, content, and purity. It's used across sugar refining, pharmaceuticals, petroleum, food, chemicals, and research institutions.
What's the difference between a manual, semi-automatic, and fully automatic polarimeter?
A manual (disc) polarimeter uses a graduated scale read by eye through a magnifier under a sodium lamp — lowest cost, no digital output. A semi-automatic model like the POL-SA 200 adds a touch screen, digital readout, and data storage. A fully automatic polarimeter like the POL-568/533/532 range adds automatic calibration, multiple pre-stored measurement methods, network connectivity, and Peltier temperature control for pharma-grade GMP compliance.
Is this suitable for pharmaceutical industry use?
Yes — the semi-automatic and fully automatic models are built with GMP compliance and WHO norms in mind, with real-time clock data stamping, multi-level password access, and 16GB or 10,000-set data storage, all common requirements for polarimeter used in pharmaceutical industry settings.
What light source do these polarimeters use?
The manual model uses a traditional sodium lamp at 589.44nm. The semi-automatic and fully automatic models use an LED light source with a precision interference filter, which replaces the sodium lamp with a more stable, energy-efficient, longer-life alternative (rated up to 20,000 hours) while still targeting the same sodium D spectrum wavelength.
What test tube sizes are supported?
Standard test tubes are available in 50mm, 100mm, and 200mm lengths depending on the model, with optional tubes (including temperature-controlled versions) available for the automatic range.
What is the price of a digital polarimeter in India?
Price depends heavily on which tier you need — manual, semi-automatic, or fully automatic — plus the specific model's measurement range, method storage capacity, and connectivity options. Rather than quote a fixed figure, get in touch with our team here with your required accuracy and sample type for an accurate quote.
Does the automatic polarimeter require manual calibration?
No — the fully automatic range includes an automatic, multi-point calibration system, so the instrument self-calibrates to maintain accuracy and repeatability without the operator having to run a manual calibration routine before each use.
Can measurement methods be customized?
Yes — the fully automatic polarimeter can store and customize up to 300 commonly used measurement methods (up to 30 on the smaller POL-532 model), letting labs pre-configure their standard test protocols rather than setting parameters manually each time.
What data output and connectivity options are available?
Depending on the model, output includes USB, keyboard/mouse, universal printer, VGA, Ethernet, and optical wireless card for internet access, plus WiFi printing support — useful for labs that need to integrate results into a LIMS or shared reporting system.
