TDB-120, Dry block thermostat


TDB-120 is a traditional Biosan’s dry block thermostat for laboratory analysis. Thermostat is designed for maintaining constant temperature of samples in tubes inserted in the aluminium block sockets. Unprecedented high precision and uniformity of temperature over the block. TDB-120 is widely used for PCR–analysis.

Microprocessor controlled temperature and time. Simultaneous indication of set and actual temperature and time.

Blocks (built in) specifications:

Two models are available offering a choice of tube configurations to meet the needs of many standard laboratory procedures:

Block A-103
21 × 0.5 ml + 32 × 1.5 ml + 50 × 0.2 ml microtubes

Block A-53
21 × 0.5 ml + 32 × 1.5 ml microtubes


Temperature setting range +25°C ... +120°C
Temperature control range 5°C above ambient ... +120°C
Temperature setting resolution 0.1°C
Temperature stability at +37°C ±0.1°C
Temperature uniformity at +37°C ±0.1°C
Temperature calibration coefficient range 0.968...1.031 (± 0.031)
Display LCD, 2х16 signs
Digital time setting 1 min–96 hrs (increment 1 min)
Overall dimensions (W×D×H) 230 × 210 × 110 mm
Weight 2.8 kg
Nominal operating voltage 230 V, 50/60 Hz or 120 V, 50/60 Hz
Power consumption (230 V) 200 W (870 mA)

Cat. Nr.

TDB-120 with block A-53 incl. power plug
BS-010401-PAA 230VAC 50/60Hz Euro plug
BS-010401-PAB 230VAC 50/60Hz UK plug
BS-010401-PA3 230VAC 50/60Hz AU plug
BS-010401-PAC 100VAC 50/60Hz US plug
BS-010401-PAC 120VAC 60Hz US plug
TDB-120 with block A-103 incl. power plug
BS-010401-QAA 230VAC 50/60Hz Euro plug
BS-010401-QAB 230VAC 50/60Hz UK plug
BS-010401-QA3 230VAC 50/60Hz AU plug
BS-010401-QAC 100VAC 50/60Hz US plug
BS-010401-QAC 120VAC 60Hz US plug
BS-010401-CK IQ OQ document
BS-010401-DK PQ document


Frequently asked questions

Can a user change one block to another on his own?

No, the blocks are fixed in the unit to provide high temperature uniformity, stability and accuracy