will definitely start soon

NEXT MONDAY :)

slight glitch

oppss...one of my contacts has dried and cracked...have to get a new one.

ready to begin..but

I'm all set with all my equipment and materials but obviously i need to get the final YES from Ms Zhang...so just waiting for that right now

OFFICAL BLOG UNO

or my experiment, I will observe which kind of liquid is best for preservation of soft contact lenses.
My CONTROLLED variables are: the contact thickness and diameter width,the contact brand, the amount of liquid the contact is submerged in.
My INDEPENDENT variable is the TYPE of liquid it's in.
My DEPENDENT variable is the level of erosion that occurs to the contact lens and which liquid is best at preserving lens.

my METHOD is
1) Obtain 4 already sterilized soft contacts of the 1. Day Acuvue moist brand
2) Measure the thickness and diameters for the contacts
3) Place contacts into separate 'beakers' (which is actually glass cups) which are containing 100 mL of different liquids; coke, hand detergent,orange juice and my neutral liquid, water.
4) Leave the contact to sit in the liquid at room temperature.
5) Observe for signs of erosion and moulding. Which ever one has a contact showing any sign of erosion would recorded and "disqualified".
6) Record observation.
7) Repeat experiment twice to check if the obtained results are reliable.

Boiled water- relatively pH neutral
Coke - acidic
Orange Juice - acidic
Soap - acidic
Milk - slightly alkaline

My experiment will take place in a dimly lit environment at room temperature. My 'beakers' will also be covered to slim the changes of my liquids evaporating. I will then check my liquids at the same time every single day and record ALL my observations. If any liquid moulds, shows signs of obvious bacteria existence and signs of contact erosion, that liquid is 'disqualified'. My final "best preservation" liquid will be obtained as the last liquid left standing as all the other liquids will be disqualified.

I will probably start my experiment next week. :)

BLOG 1 draft...

For my experiment, I will observe which kind of liquid is best for preservation of soft contact lenses.
My CONTROLLED variables are: the contact thickness and diameter width,the contact brand, the amount of liquid the contact is submerged in.
My INDEPENDENT variable is the TYPE of liquid it's in.
My DEPENDENT variable is the level of erosion that occurs to the contact lens and which liquid is best at preserving lens.

my METHOD is
1) Obtain 4 already sterilized soft contacts of the 1. Day Acuvue moist brand
2) Measure the thickness and diameters for the contacts
3) Place contacts into separate 'beakers' (which is actually glass cups) which are containing 100 mL of different liquids; coke, hand detergent,orange juice and my neutral liquid, water.
4) Leave the contact to sit in the liquid at room temperature.
5) Observe for signs of erosion and moulding. Which ever one has a contact showing any sign of erosion would recorded and "disqualified".
6) Record observation.
7) Repeat experiment twice to check if the obtained results are reliable.

Boiled water- relatively pH neutral
Coke - acidic
Orange Juice - acidic
Soap - acidic
Milk - slightly alkaline

My experiment will take place in a dimly lit environment at room temperature. My 'beakers' will also be covered to slim the changes of my liquids evaporating. I will then check my liquids at the same time every single day and record ALL my observations. If any liquid moulds, shows signs of obvious bacteria existence and signs of contact erosion, that liquid is 'disqualified'. My final "best preservation" liquid will be obtained as the last liquid left standing as all the other liquids will be disqualified.

DECISION

i have decided....TO DO THE CONTACT LEN EXPERIMENT :)

erosion of soft contacts

I want to put soft contacts into different liquid solutions such as coke and mineral water. As for how to measure the erosion, I'm thinking about measuring the diameters and simple observations such as 'whether it developed bumps or if it wasnt flexible any more?' I wonder if thats good enough or do i need actual facts and figures? help?