Sub-Zero Sample Preservation
WS 98 F Freezing Sampler
The WS 98 can preserve samples by immediately depositing them directly in its cooler. The removable cooler can then be brought to the lab, ensuring that the cold chain is never broken. Thanks to the unique distributor system, a variety of bottles can be filled.
The WS 98 F features the same benefits as the WS 98, and in addition offers the following functions:
- Active refrigeration for sample cooling down to -22 °C
- Ability to power cooler with socket in vehicle to maintain cold chain during transport
- Sampler housing, frame and distributor made of stainless steel
- Controller and other electronic components protected in sampler housing
- No icing of fill opening
Controller
WaterSam controllers feature user-friendly operation and reliability. Both controller types not only enable to the activation of programs at the same time, they can be also run simultaneously.
Custom software modifications can easily made upon request.
The WaterSam MS3 controller offers user-friendly operation in addition to a range of communications possibilities and the ability to retrieve data from internal and external sources.
Despite the wide-ranging possibilities available, sampler operation is very user-friendly thanks to the 24 keys and large graphic display. Color-coded direct function keys serve to start, pause and stop selected programs. A grab sample can be taken simply by pressing the blue key.
Intelligent sensors can be connected directly to the controller, without the need for a transmitter. If desired, a variety of data can be accessed and retrieved via a USB port.
Sampling Systems
Depending on conditions and requirements, samplers are available with diverse sampling systems:
Technical Specifications
WS 98 F
| General | Stationary sampler for indoor applications |
| Norms | CE |
| Dimensions | HxWxD: 1,610 x 800 x 710 mm |
| Weight | Total, incl. frame: approx. 75–85 kg, depending on equipment (cooler: approx. 18.5 kg) |
| Power Requirements | Sampler: 230 V AC, 50 Hz Cooler: 100-240 V AC, 50/60 Hz; 12/24 V DC (vehicle power plug) |
Sampling (Standard System)
| Sampling System | VAC vacuum pump sampling system for time-, volume, event-proportionale sampling Optional: VAR-B, VAR-E, VAR-C or peristaltic pump for flow-proportional sampling (variable volumes) |
| Sample Volume | 15 – 350 ml (multiple-shot sampling possible) Optional: larger volumes, up to 2000 ml |
| Metering Vessel | DURAN 50 borosilicate glass; dishwasher-safe, resistant to acid, alkali, and temperature fluctuations |
| Pump Performance | 8 m lift height; 0.5 m/s up to 6 m lift heights; 14 l/min free flow Optional: high-performance pump (19 l/min) Optional: VacuPress for lift heights up to 30 m |
| Intake Hose | 12 mm ID PVC (optional: 16 mm ID) |
| Wetted Parts | Borosilicate glass, PE, PVC, stainless steel 304/316Ti, silicone Optional: alternative materials as required |
Housing / Temperature Control
| Housing Materials | WS 98: stainless steel 316Ti Frame: Stainless steel 304 XYZ Distributor: stainless steel 316Ti Optional: powerder coating of stainless steel components (RAL colors) Cooler: polyethylene with polyurethane insulation |
| Compressor Cooling | 12/24 V DC; 6 A with battery monitor (requires external battery) 100-240 V AC; 1.3-0.7 A CFC-free refrigerant R134a |
| Internal Temperature | Adjustable from -22 °C to +10 °C |
| Hourly Run Times at | Typical data for 12 V DC / 230 V AC: 12% (power draw Ti=5°C Ta=20°C 7.5 A DC / 0.7 A AC) 22% (power draw Ti=5°C Ta=32°C 7.5 A DC / 0.7 A AC) |
Verteiler / Flaschen
| Distributor | XYZ Distributor: three-axis coordinate system for direct depositing of discrete samples |
| Bottle Synchronization | Automatic |
| Sample Bottles | 1 x 6.4 / 10.4 l PE 4 x 6.4 l PE 8 x 2 l PE |
