B08_Attachment_1_Salient_Characteristics.docx

Salient Characteristics for a Alkalinity Analyzer

1. Mode: automated open cell Gran titration

2. Typical sample consumption range: 10 – 25 mL per analysis

3. Time consumption per sample: 7 – 10 minutes

4. Precision: better than ± 0.1% or ±1- 2 μM for seawater

5. Work environment: shipboard or land-based laboratory

6. Power requirement: 100 – 240 VAC 7. Size: 11” H × 9” D × 12” W

7. Communication: RS 232, USB

· AS-ALK3 total alkalinity titrator consists of two high precision digital pumps (adjustable from 1 to 25 mL) for precise delivery of reagent and sample solutions

· These pumps only used for this model (no other manufacturers)

· Uses research grade pH meter/electrode

· Automates gran titration method

· Compatible with samples from fresh to salt water, groundwater and porewater

· Built and tested for shipboard use

· More user friendly than other instruments

· Reduces user error by automation

· More accurate than manual way with an acceptable error of 5%

· Method utilizing this instrument are widely accepted in the ocean acidification community

· Reduces total volume of sample needed from ~100mL to 25mL allowing for less samples to be collected and/or more replications to be performed with same volume