It can collect water samples, biological samples, environmental samples and other samples α、 total β、 Activity measurement of Cs-137 and Pb-210. It is widely used in disease control and Prevention Center, water supply company, product quality supervision and inspection unit, environmental monitoring station, advanced laboratory and other units.

LB 790 ten channel low background counter can measure low activity simultaneously or separately α、β Nuclide, α The lower detection limit is about 12mbq (241Am), β The lower detection limit is 22mbq (90Sr) (1 hour measurement time according to ISO 11929), and two measuring discs (60mm diameter) can be installed on each copper tray.

The entrance window of the detector is protected by a thin film

The anti coincidence probe is installed above the measuring probe to suppress cosmic rays

10cm all-round lead shielding to achieve the best low background performance

It is easy to maintain and repair. When repairing and replacing a single detection module, a simulated detection can be replaced to ensure the gas flow

The distance between the built-in preamplifier and the detector is shortened to reduce noise and interference

10 samples were measured simultaneously, α and β Activity (optional unit)

Automatic half-life correction, independent adjustment α and β Avenue

Typical background:

  α Count: 0.05cpm, guaranteed value: 0.1cpm

  β Count: 0.7cpm, guarantee value: 1.0cpm

Typical efficiency:

α （241Am）：34%

α （239Pu）：38%

β （14C）：25%

β （36Cl）：50%

Detection window: 1.5 μ m. Hostafan film (0.21mg/cm2)

Working gas: arch4 (90 / 10)

          ArCO2（82/18）

          ArCO2（90/10）

Working voltage (P-10 gas): 1450v

Weight: About 1200kg