How Liquid And Gas Analyzers Are Used In These 9 Industries

By  //  May 30, 2022

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Liquid and gas analyzers are becoming more widely used. It’s undeniable that these instruments have become an integral part of people’s daily lives, some of which might be unknown to you. 

Did you know that liquid and gas analyzers play a significant role in many industries that help make the world better day by day? Here’s an overview of some of the most commonly used liquid and gas analyzers in different industries.

But first, it’s necessary to understand liquid and gas analytic systems, such as those offered by producers like KECO, and how they work.

Liquid analyzers

A liquid analytical system is a method of analysis that uses the physical properties of liquids to determine their composition. It evaluates analytes in water, foodstuffs, beverages, pharmaceuticals, biological fluids, and more. 

The principle behind this type of analysis is based on the fact that each chemical element has its unique combination of physical characteristics, such as:



refractive index

specific heat capacity

thermal conductivity

electrical resistivity

surface tension

vapor pressure

It means that if you can measure one or more of these parameters, you can easily identify the presence of any given element in a sample.

Gas analyzer

A gas analyzer measures the concentration of gases in the air or other gaseous mixtures. It’s widely used in industry and science for measuring concentrations of various gases, combustion products, flue gases, exhaust fumes, and others.

This brief list will help you understand some of today’s most common liquid and gas analytical systems:

■ Refractometers: Refractometers measure the percentage of alcohol content in liquids. 

■ Spectrophotometer: Spectrophotometers measure optical absorption spectra of materials. They’re used to analyze samples containing organic compounds, metals, minerals, and dyes.

■ Conductivity meter: Conductivity meters measure the amount of electricity flowing across a substance. They’re used to measure the purity of solutions.

■ pH meter: The pH meters measure the acidity or alkalinity of a solution. They’re used to test the quality of drinking water.

■ Density meter: Density meters measure the mass of a substance per unit volume. They’re used in quality control and research and development in the pharmaceutical, food and beverage, and petroleum industry.

■ Thermometer: Thermometers measure temperature. They monitor the internal temperature of food, drinks, medicines, and other substances.

■ Gas chromatograph-mass spectrometer (GCMS): The GCMS is a device that combines chromatography and mass spectroscopy to analyze environmental samples.

■ Titrator: Titrators measure the total dissolved solids in water. They determine the amount of salt, sugar, and Vitamin C or E present in water.

■ Colorimeter: Colorimeters measure the color intensity of a solution. They’re used in the paint and textile industry and food manufacturing.

■ Flame photometer: Flame photometers are used to determine lead in petrol.

■ Atomic absorption spectrophotometer: An atomic absorption spectrophotometer measures the concentration of heavy metals. It’s commonly used in environmental testing, pharmaceutical analysis, and the food and beverage industry.

■ Fluorescence spectrofluorometer: A spectrofluorometer determines the fluorescence of a compound when it absorbs radiation from a source. It’s used in medical and chemical research fields.

■ Infrared spectrophotometer: An infrared spectrophotometer uses infrared radiation to determine the molecular structure of a material. It’s used in forensic and criminal analysis.

■ Raman spectrophotometer: A Raman spectrophotometer is an instrument that detects the frequency shifts caused by vibrational modes of molecules. This information provides structural details about the molecule being studied, which are integral in assessing cancer surgery success and endoscopic procedures.

What are their applications?

Liquid and gas analyzers are used in a wide variety of industries. Analyzers are helpful in industries related to pharmaceutical, food processing, chemical, oil and gas, environmental and industrial monitoring, water treatment, and others. The following is an overview of some of these industries and how liquid or gas analysis equipment may be used to help them run their business better.

1. Pharmaceutical industry

The pharmaceutical industry needs to keep track of the chemical composition of its drugs to make sure that they’re safe for consumption. Pharmaceutical industries also need to monitor the purity level of their active ingredients. 

There are two types of testing conducted on drugs: physical (qualitative) and analytical (quantitative) tests. Physical tests include measuring weight, size, color, and others, while analytical tests measure the active ingredients within the drug. Both tests are essential for ensuring that drugs are safe and effective. (1)

One example is the dissolution test. This test measures the amount of drug dissolved in a specific medium (usually distilled water) over time. It’s also important to know whether any impurities have been introduced during the manufacturing process. For instance, if you were to add a foreign substance to your medication, it could cause serious side effects. (2)

Another type is the pH test, which is used to determine the acidity or alkalinity of a solution. If the pH level is too high or low, it can affect the stability of the product.

2. Food processing

The quality of food products depends on the purity of their ingredients, and it’s essential to check the levels of various chemicals present in their raw materials. It helps ensure the safety of consumers.

The food processing industry has a lot of different applications for both liquid and gas analysis. Some common examples include:

Measuring moisture content

Determining the presence of contaminants such as bacteria, mold, pesticides, and other chemicals

Checking for leaks in pipes and tanks

Monitoring air quality

Testing for the presence of harmful gases

3. Chemical industry

Chemicals are used in many different aspects like cleaning products, plastics, and paints. Chemicals play a significant role in ensuring people live comfortable lives. 

There are several different types of chemicals, but most people think about three when talking about the chemical industry: solvents, acids, and bases.

Solvents are commonly used in paint thinners, nail polish removers, and glue. Acids are compounds that react with metals to form salts. Bases are compounds that react with oxygen to form oxides. Common bases include sodium hydroxide, potassium hydroxide, ammonia, and calcium oxide.

Acidic solutions are typically corrosive and dangerous, while basic solutions are less likely to damage materials than acidic ones. Many chemical plants rely on liquid and gas analyzers to help them determine whether or not their production processes are working properly.

4. Environmental monitoring

There are a lot of environmental pollutants out there, and it’s necessary to know what kind of toxins are being released into the air, soil, and water. So, liquid and gas analyzers come in handy when monitoring these environments.

The Environmental Protection Agency (EPA) monitors the environment regularly using liquid and gas analyzers. It includes monitoring:

air pollution

water contamination

hazardous waste sites 

Many of these activities involve the collection of data using special equipment. The EPA monitors the air quality by measuring levels of pollutants such as carbon monoxide, sulfur dioxide, nitrogen dioxide, ozone, lead, particulate matter, and volatile organic compounds. 

Hazardous waste is collected and monitored to ensure that it’s properly disposed of. The EPA works closely with state environmental agencies to protect the environment. With the help of technologies like liquid and gas analyzers, they provide technical assistance and information about how to reduce pollution. 

5. Water treatment

In addition to monitoring the environment, the EPA also provides drinking water treatment services using liquid analyzers. Drinking water must meet federal standards before it’s considered safe to drink. The EPA collects water samples regularly to help ensure this standard is met. If any contaminants are found, they’re removed and treated.

There are a lot of contaminants that exist in water sources. Some of these include heavy metals such as:

Lead and mercury



Bacteria (3)

To avoid any health risks, water treatment companies must test the water before using it for drinking.

With the help of liquid and gas analyzers, the EPA can regulate wastewater discharge into rivers, lakes, streams, and oceans. Wastewater contains solid and liquid material, which may be toxic and should be removed because discharging wastewater into waterways can cause serious health problems.

6. Air quality

Pollution control is one of the most critical functions of liquid and gas analyzers. Air quality affects everyone’s health. Pollutants in the air include dust particles, smog, gases, and fumes. 

There are many sources of air pollution, including:

Power plants



Household appliances

Liquid and gas analyzers help monitor air quality at airports, schools, hospitals, and public buildings. Experts collect air samples and test them for various types of pollutants.

7. Power generation

Another everyday use of liquid and gas analyzer is in power generation. As the process involves combustion, it’s necessary to measure the amount of carbon monoxide and other gases produced by the plant.

8. Petrochemical industry

The petrochemical industry relies heavily on gas chromatography (GC) to detect impurities in their feedstocks. Oil refineries use liquid and gas analyzers for different reasons. For example, they may want to analyze crude oil properties to see if there are harmful substances.

9. Research & development

A lot of research goes into developing new technologies, and one way to do this is through testing. Research and development departments often use liquid and gas analyzers to discover how well certain products work.

Bottom line

Analyzing liquids and gases is an essential part of society’s everyday functions. It’s evident that liquid and gas analyzers are integral instruments used worldwide to monitor the environment and produce energy for a more sustainable future.


(1) “Drug Analysis,” Source:

(2) “Dissolution Testing,” Source: 

(3) “Water Pollutant,” Source: