Hellma standard immersion probes are ideally suited to laboratory measurements. As with conventional cell measurements, the collimated light beam passes through the solution only once. The use of a prism very low values for stray light.
Standard Immersion Probe
The measuring head is made of SUPRASIL® 300 quartz and secured into the stainless steel top section with a FFKM-O-Ring.The removable metal sleeve protects the immersion probe from damage and reduces the amount of incoming ambient light.
Product info 661.000
| Type | 661.000 |
| Probe head material | Quartz SUPRASIL® 300 |
| Probe barrel material | Stainless steel 1.4404 (316 L) |
| Protective sleeve material | Stainless steel 1.4404 (316 L) /1.4571 (316 Ti) |
| Probe head seal | FFPM |
| Protective sleeve seal | FPM |
| Outside Ø probe head | 15 mm |
| Outside Ø probe shaft | 20 mm |
| Outside Ø probe barrel | 18 mm |
| Outside Ø protective sleeve | 20 mm |
| Total length | approx. 180 mm (10 mm light path) |
| Max. immersion depth | 100 mm (10 mm light path) |
| Light path | 1 mm, 2 mm, 5 mm, 10 mm, 20 mm |
| Typ. transmission | UV/Vis approx. 40% in air above 300 nm NIR approx. 40% in air above 400 nm |
| Max. pressure | 6 bar |
| Max. temperature | 150 °C |
| Fibre-optic cables | Not included, available separately for UV/Vis and NIR ranges (see chapter 3.3.1 and 3.3.3). |
back