All correspondence must be made through the Vendor Portal. 1 Required Item In-Situ Brand Only - No substitutions see attached specsno substitutions In-Situ, Inc. Brand only ---Aqua TROLL 500 multiparameter environmental sondes with attachments. 22034 - Logging Devices, Electronic, Long-Range Data Collection and Recording for Use at a Remote Location 8.00 Each 2 Required Item In-Situ Brand Only - No substitutions (Item 0020680) Conductivity Calibration Solution, 1413μS/cm, Liter 22034 - Logging Devices, Electronic, Long-Range Data Collection and Recording for Use at a Remote Location 2.00 Each 3 Required Item In-Situ Brand Only - No substitutions (Item 0032120) pH/ORP Calibration Kit – Includes 1 Liter Each: 4, 7, 10 pH, Zobell’S Solution 22034 - Logging Devices, Electronic, Long-Range Data Collection and Recording for Use at a Remote Location 2.00 Each 4 Required Item In-Situ Brand Only - No substitutions Shipping fees- Shipping- Must include price of shipping all items listed on the bid to Geological Survey of Alabama 420 Hackberry Lane, Tuscaloosa, AL 35486. If your shipping is free, type "free shipping" in the description for line 2 and enter $0.00 dollars for the cost. 22034 - Logging Devices, Electronic, Long-Range Data Collection and Recording for Use at a Remote Location 1.00 Each