Testing the Waters
Page 1 of 2
LOCATION
VMC
WRITTEN BY: APPROVED BY: DATE CREATED LAST REVISION
Science Team WS&H June 27, 2014 New
PERSONAL PROTECTION EQUIPMENT (PPE)
Safety glasses or face shield must be worn at all times in work areas. Long and loose hair must be tied back
Appropriate footwear must be worn. Shoe must be fully enclosed. No open toed shoes.
Close fitting/protective clothing must be worn.
Remove strings hanging from pullovers/sweaters.
Rings and jewelry (long necklaces / bracelets, etc.) must not be worn.
HAZARDS PRESENT

Chemical burns

Absorption of Chemicals.

Inhalation of Chemicals.

Ingestion of Chemicals.

Slips / trips & falls

Chemical hazards
APPARATUS / MATERIALS

1.0 X 10 -2 M HCl

1.0 X 10 -4 M HCl

1.0 X 10 -6 M HCl

1.0 X 10 -2 M NaOH

1.0 X 10 -4 M NaOH

1.0 X 10 -6 M NaOH

Micropipettes

Glass plates

Universal indicator solution

Phenolphthalein solution

Natural indicator

Small beakers

4 household products (from students)

Distilled water


ADDITIONAL
REQUIREMENTS
Equipment orientation
WHMIS training
SAFE WORK PROCEDURE
1. Don all personal protective equipment including: safety glasses, & protective nitrile gloves
(where required). Ensure all loose clothing is either removed or tied back. Remove any jewelry and tie back long hair.
2. HCl is corrosive and NaOH is caustic. Wear goggles at all times. Rinse spills and splashes on skin and clothing thoroughly. Clean up spills on bench immediately.
3. Put glass plate on piece of white paper.
4. Put a micropipette in each of the HCl and NaOH solutions. Put 2 drops of each solution of HCl and NaOH on glass plate in order from 1 to 6. Also put 2 drops of distilled water and 2 drops of tape water on plate.

Testing the Waters
Page 2 of 2
5. Test each solution and water with one drop of universal indicator solution or a small piece of pH paper. Record the colour and the pH.
6. Clean and dry glass plate and put back on white paper.
7. Repeat step 4.
8. Add 2 drops of phenolphthalein solution to each solution and each waters. Record the colour of each.
9. Repeat steps 6 to 8 using the natural indicator instead of phenolphthalein.
10. Write the names of the house hold products in the data table.
11. Make dilute solutions of any solid or semi-solid household products by dissolving a small amount of substance in 10 ml of distilled water.
12. Repeat steps 4 to 9 for the four household products.
13. Leave the micropipettes in the HCl and NaOH solutions. Put the other micropipettes in the waste basket.
14. Wash the glass plate, wrap it in paper towel and return it to the lab cart. Wash the beakers and return them to the cart.
15. Clean up your workstation.


REGULATORY REQUIREMENTS
WS&H Act W210, Section 4, 5
Mb. Regulations 217/2006,

Part 16, (Machines / Tools & Robots) Sections 16.1-16.18)

Part 35, (WHMIS Application)

Part 36, (Chemical & Biological Substances Application)