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                  | LANWATSU PASSIVE SAMPLERS* FOR BTEX SPECIES |  
                  | Code | Items |  | Price/USD |  
                  | PS-08 | Passive sampler for BTEX  (dry season) & a vial for extraction |  | 19.23 |  
                  | PS-09 | Passive sampler for BTEX (rainy season)& a vial for extraction | 23.07 |  
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                      * A preloaded passive sampler & a vial for  extraction |  
                  | SAMPLE TUBES |  
                  | Code | Items |  | Price/USD |  
                  | THT-01 | Standard sample tube with activated carbon (50/100mg) |  | 2.89 |  
                  | THT-02 | Sample tube with activated carbon (150/450mg). | 12.89 |  
                  | STANDARDS |  
                  | Code | Items |  | Price/USD |  
                  | ST-06 | 5mg/ml Clorobenzene Internal  standard  in methanol, 5 ml. | 
 | 25.00 |  
                  | ST-07 | 5mg/ml Florobenzene Internal  standard     in methanol, 5 ml. |  | 25.00 |  
                  | ST-08 | Stock  BTEX standard in methanol (ordered), 5 ml. |  | 68.85 |  
                  | ACCESSORIES |  
                  | Code | Items |  | Price/USD |  
                  | TEF-01 | PTFE screen d 25 mm. Piece. |  | 4.33 |  
                  | TEF-02 | PTFE screen d 25 mm. Box of 10. | 38.5 |  
                  | TEF-03 | PTFE screen d 25 mm. Box of 50. | 144.00 |  
                  | SS-01 | SS screen d 25 mm. Box of 10. |  | 4.80 |  
                  | SS-02 | SS screen d 25 mm. Box of 100. | 40.42 |  
                  | SS-03 | SS screen d 20 mm. Box of 10. | 4.80 |  
                  | SS-04 | SS screen 20 mm. Box of 100. | 40.42 |  
                  | OR-01 | Thin O-ring.  1 piece. |  | 1.99 |  
                  | OR-02 | Thin O-ring. Box of 10. | 17.99 |  
                  | OR-03 | Thick O-ring.  1 piece. | 1.99 |  
                  | OR-04 | Thick O-ring. Box of 10 . | 17.99 |  
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