How to achieve ±0.05℃ stability in laboratory incubators?

Is it difficult to achieve a constant temperature of ± 0.05 ℃ in the laboratory? How to achieve "zero drift" of TCR3750 thin film platinum resistance?

In scenarios such as cell culture chambers (37 ± 0.05 ℃), muffle furnaces (1000 ℃± 1 ℃), and gas chromatography column temperature chambers (± 0.1 ℃), laboratory constant temperature equipment high-precision thin-film platinum resistors solve the problem of drift above ± 0.5 ℃ caused by long-term operation (1 year) of traditional sensors with "nanoscale stability+ultra-low temperature drift"

H2: Two major accuracy bottlenecks of laboratory constant temperature equipment

H3: Long term drift: Traditional sensors have a resistance drift of ± 0.5% after 1 year in a constant temperature environment (such as a culture box at 37 ℃), resulting in a 10% increase in cell culture failure rate;

H3: Ultra low temperature drift: The TCR deviation of ordinary sensors is ± 50ppm/℃, and the resistance error is ± 0.3% when the temperature changes by 1 ℃, which cannot meet the accuracy requirement of ± 0.05 ℃.

H2: Laboratory scene advantages of TCR3750 thin film platinum resistance

Our laboratory temperature control equipment has a high-precision thin-film platinum resistance TCR accuracy of 3750ppm/℃± 10ppm (industry-leading), with a long-term drift of<± 0.05 ℃ for 1 year. With calibration in a constant temperature bath, it can achieve ultra-high precision of ± 0.02 ℃ (close to standard platinum resistance).

H3: Ultra wide temperature range: -70~200 ℃ covering the entire laboratory scene (from -40 ℃ low temperature box to 200 ℃ drying box), without the need to replace sensors;

After being used in a life science laboratory at a certain university, the success rate of cell culture increased from 85% to 98%, and the repeatability of experimental data increased by 90%. This is precisely the value of high-precision thin-film platinum resistors in laboratory constant temperature equipment.

Scenario: A CO ₂ incubator at a certain university (with a capacity of 200L, required to maintain 37 ± 0.05 ℃ and operate continuously for 30 days)
Solution: Customized 4 × 2mm PT100 thin film platinum resistance (attached to the inner chamber of the incubator)+high-precision acquisition instrument (resolution 0.001 ℃)
Effect: Continuous monitoring of drift<± 0.03 ℃ for 30 days reduced the standard deviation of cell proliferation rate from 15% to 3%, and the reliability of the paper data was recognized by the reviewers.

Long term drift (≤± 0.05%/year, metal thin film process is preferred)
TCR accuracy (3750ppm/℃± 10ppm, ensuring linearity)
Calibration support (provide standard resistance meter+calibration certificate)

Specification for Temperature Control of Laboratory Biosafety Cabinets (WS 233-2017)
Cell Culture Experiment Report of a Certain University (2024)
SGS Long term Stability Test Report (Report No. NJ-SGS-02413)

To lay the foundation for zero error in laboratory data, high-precision thin-film platinum resistors with constant temperature equipment in the laboratory are the guarantee of scientific rigor. Private message to obtain the same plan from universities and apply for sample testing!

Author Information: Liu Gong | Laboratory Sensor Technology Expert (10 years of experience in thermal management of scientific research instruments, serving over 50 university laboratories)

FAQ (3 questions):

Q1: Can the sensor withstand laboratory disinfection (such as alcohol wiping)?
A: The surface is treated with anti-corrosion, and there is no performance change after wiping 100 times with 75% alcohol.
Q2: Is a calibration certificate (CNAS accredited) provided?
A: Each batch of sensors comes with an SGS calibration certificate (including standard resistance values at 0 ℃/100 ℃).
Q3: Minimum order quantity?
A: Minimum order of 10 pieces (laboratory small batch verification friendly), supports mixed batch (pt100/pt1000).

Xi'an Tongzida Technology Co., Ltd. is a leading manufacturer and supplier of advanced thermistor technology, focusing on providing high-performance temperature sensors for demanding industrial applications. Our profound expertise in microsensor manufacturing, special packaging technology, and multi-sensor integration methods enables us to ensure the excellent performance and reliability of our thermistors. As a trusted supplier of precision temperature measurement solutions, we offer a complete thermistor system, including sensor chips, testing systems, and analysis software. Please feel free to contact our technical experts at any time. ventes11@xatzd.com Discuss your specific requirements for thermistors and learn how our advanced temperature resistor optimization and manufacturing capabilities can enhance the performance and reliability of your temperature measurement system.