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Written by Lindsey Sherman
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Thursday, 05 February 2009 09:23 |
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WASP 2 spiral plater
| The WASP2 spiral plater boasts a host of innovative features ensuring it is still the most widely used spiral plater. It eliminates the need for serial dilutions, offers a reduction in cost per test and standardizes counting methods. |
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| Fully microprocessor controlled and allowing depositions onto 10cm and 15cm plates in logarithmic volumes of 50ul,100ul and 200ul and a linear deposition of up to 400ul. The stylus arm dispenses liquid sample either uniformly across the plate or as a continuously decreasing volume, equivalent to a thousand-fold dilution. The unique stylus geometry and volume allows deposition on plates of varying agar height and up to eight consecutive depositions from one sample draw without the need to wash or collect more sample. |
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| One feature unique to WASP 2 is its ability to load sample, inoculate a plate and then clean the stylus with only one keystroke. WASP 2 has an automatic cleaning cycle, with provision for both sterile water and a self-leveling bleach reservoir system. The automatic wash cycle uses a large, 500ml disinfectant reservoir, as well as autoclaveable 100ml containers for sterile water. This eliminates contamination problems associated with using a large, replenishable reservoir. Automation of the cleaning cycle gives the operator time to remove the inoculated plate and prepare for the next sample, thus streamlining operation. |
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To ensure less-experienced users can operate the instrument with minimal risk of inaccurate results, the user-selectable parameters can be chosen and then locked. All controls are accessed via a full-color, purpose-designed membrane keypad.
The WASP 2 is used in conjunction with the Vacuum Source, which is necessary for drawing liquids through the system. The unit will inoculate the plate at fastest speed possible without centrifugal force causing the sample to be pushed to the outside of the plate. There is no set-up procedure, simply “plug and play.” There is easy access to all serviceable parts.
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 WASP2 Brochure
Diagnostic Microbiology and Infectious Disease (2007)
 ICAAC 2008 BLI489 Time Kill
| WASP 2 Specifications |
| Petri Dish |
10cm or 15cm |
| Sample Volume Dispensed |
18ul-400ul |
| Deposition Modes |
Logarithmic and uniform |
| Countable Range Without Dilution |
30 to 4 x 105 cfu/ml |
| Vacuum |
External Source |
| Dimensions in mm (W x H x D) |
530 x 410 x 360 |
| Weight in kg |
18 |
| Power Supply |
110 V, 50-60 Hz |
| External Vacuum Source |
| Automatic electronic vacuum control |
programmable from 0 to 20" Hg |
| Waste flask |
1 liter, autoclaveable |
| Dimensions in mm (W x H x D) |
205 x 200 x 255 |
| Weight in kg |
2.3 |
| Power Supply |
110 V or 220 V, 50-60 Hz |
| Options/ Accessories |
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VACUUM SOURCE
Required in order to draw sample into the WASP 2 at a level of 18”-20” Hg. Single button operation and runs fully automatically. A built-in liquid sensor prevents operation when the reservoir is full. Comes with 3 autoclavable collection containers with lids.
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15cm PLATE OPTION
15cm turntable accommodates 15cm plates for use with the WASP 2 spiral plater. The 10cm turntable is removed and replaced with the 15cm turntable without the use of tools.
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ProtoCOL
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Last Updated on Thursday, 25 February 2010 17:22 |
