Calibration is simple, once you understand the basics. Simply put, Calibration is the method of adjusting and evaluating the values of a gadget for its accuracy and precision when compared to another of accurate and unvarying standard. Calibration checks, determines and corrects all instruments that use quantitative measurements so that the results are absolutely correct. Remember, Calibration is vital as it is similar to having an insurance policy for your equipments.

Calibration, as a method which cannot accept faulty, shortcut processes, as crucial businesses and people rely on the results of the measurements that undergo this process. Laboratories, medical/healthcare, engineering, measuring device manufacturers, research & development, markets, testing, aviation, manufacturing, processing plants are some businesses that undergo the process of calibration so that in case there are errors, they can be adjusted (through calibration constants) until the results are spot-on perfect. Equipments that have passed a calibration program will have an accurate recall list of its test, measurement and diagnostic equipment.

Calibration weight sets are popularly available in the following configurations:
1g-50g
1g-100g
1g-200g
1g-500g
1g-1kg
1g-2 kg
1g-5 kg
1g-10 kg
1mg-5g
1mg-100g
1mg-200g
1mg-500g
1mg-1kg
1mg-2 kg
1mg-5 kg
1mg-10 kg

Individual Calibration weights are available in the following configurations:
1g
2g
5g
10g
20g
30g
50g
100g
200g
300g
500g
1kg
2kg
3kg
5kg
10kg
20kg
50kg
100kg

Points to remember while choosing a company that offers calibration services:
A company/ business with an excellent track record.
Go for a company/business with good customer reviews.
Look for referrals.
If possible, look for client reviews and accordingly choose the Calibration technician you think is best.
Always opt for ISO accredited calibration services. ISO/IEC 17025 is the required standard that businesses offering Calibration services have to pass. In simple words, ISO/IEC 17025 is the general requirement for the competence of testing and calibration laboratories.
Standards of calibration, of the company/business you are hiring should meet Level I Tractability requirements.

Now-a-days, the market is chock-a-block with instruments/machines/gadgets to calibrate medical/laboratorial instruments. Some of them are:
Dry Block System
Liquid bath
Fixed points
ABB Instruments: This comes in a multitude of options fitting different purposes like Actuators/Positioners, Analytical instruments,
Flow measurement, Pressure measurement, Recorders/Indicators, Temperature measurement, Process Controllers, Level measurement etc.
Kaye instruments: Validation systems, Calibration equipment, Pressure instruments, Industrial Measurements, Sensors and Accessories.
Vaisala Instruments: Purpose of Vaisala is to measure humidity for calibration and adjustment services. There are many types of instruments to measure ammonia, dewpoint, carbon dioxide, barometric pressure etc.