Cleaning Procedure 
Scrupulous cleaning procedures were used to minimize organic 
contamination of the material used in this work. The details 
are given in the following. 
Glassware (Sample bottles, vials, lab glassware, all 
glass materials ) 
1. Wash with Aquanox detergent. 
2. Rinse with tap water followed by filtered, 
distilled water. 
3. Bring to annealing temperature of the glass 
(450°C) for at least 1 hour. 
4. Slowly cool (>4 hours). 
5. Cover exposed areas with baked aluminum foil. 
6. Cover with clean caps or lids. 
Tools (Forceps, trowels, spatulas, etc.) 
1. Clean with Aquanox. 
2. Rinse with charcoal filtered water. 
3. Dry in air. 
4. Wrap in aluminum foil. 
Piston Core Liner (Brass) 
1. Scrub with Aquanox detergent using brush 
fixed on ram-rod. 
2. Rinse with tap water. 
3. Add chromic acid/sulfuric acid cleaning 
solution to etch surfaces: tube is in¬ 
verted several times. 
4. Rinse with tap water. 
5. Inspect for bright shiny inner surface. 
6. In field, tube was rinsed by brush and 
rinsed between cores using the on-board 
water supply. 
47 
