6- Place only the edge of the Q-tip at the top the Flame. 7- Remove it when you see the of light being given off to avoid burning the Q-tip. 8- Clean up procedure: Discard used Q-tips to the bin, cover back compounds and put them up in a safe place, pour away distilled water in the sink, disconnect the Bunsen burner and clean it if stained,clean the lab test surroundings with paper towel to ensure no stain is left, wash your hands remove your goggles only when all equipments have been placed in safe places. Compound | Flame Colour Observation | 1 LiNO3
4. Using free hand, gently shake the tube of E. coli culture broth to disperse the culture throughout the broth. 5. Grasp the cap of the culture tube with the little finger on the hand holding the inoculating loop and remove it from the tube. 6.
Variables: 1. Independent - Type of nut 2. Dependent - Change of nut mass, Rise of temperature in water 3. Constant - Vessel (copper), Starting water temperature, Surrounding temperature Fair test:  There should be no errors in the measuring the volume of water  Weigh the nut correctly  Copper heats very quickly and the thermometer should not touch it as there will be a big error  The nut should be held in the same place as far as possible Method: 1. Take a nut, and weight it using the top pan balance.
b) Open the cover of the petri dish halfway and pour in the agar to just cover the bottom of the dish. Try to minimize the introduction of bubbles. c) Repeat for all the dishes. d) Immediately rinse the flask with warm water to facilitate washing the flask. 5.
How to wash your hands Washing your hands properly is an easy way to avoid getting and spreading viruses and germs. First, remove all rings, watches, bracelets, or other jewelry on hands and wrists. Jewelry can carry pathogens and should be cleaned with a disinfectant separately, so they will not be damaged. Next, stand close enough to the sink to reach the flow of water without touching the sink with your body because the sink itself should be considered contaminated. By standing too close to the sink it may spread any contamination to your cloths.
For all sterilising equipment, follow the manufacturer’s instructions. Cold water sterilisers need the solution changing every 24 hours, and feeding equipment needs to be left submerged for 30 minutes before it can be used. Make sure there are no trapped air bubbles in the bottles or teats, as this means these areas won’t be sterilized. Ensure all the equipment is kept under the water with a floating cover. When using a steam sterilizer, make sure that the teats and bottles are facing down, so that the steam goes up into them when the water heats up.
The watch glass was removed with the beaker tongs. Using a rubber bulb and a stirring rod to stir the solution continuously, 15.00mL of .25M BaCl2 solution was added to the solution in the beaker. The watch glass is replaced and the solution is keep hot but not boiling for 15 minutes. The precipitate was allowed to settle. When the liquid above the precipitate was clear, the solution was tested for completeness of precipitation when a few drops of BaCl2 solution were added from a pipette.
Graduated cylinder 8. Calculator 9. Wash bottle Procedure: To commence, first I gathered all the material needed to keep from being too messy with the experiment. Next I went to collect my unknown liquid and metal since the material and purpose was to find the mass and volume of them and located their place of origin from the data collected. Once all the equipment has be gather, step one was to clean the flask because a dirty flask might have an effect on the precise mass of it.
Once it is completely distilled, remove your filtered material and add 2 mL of dichloromethane. Swish the flask, and then place into a small beaker. Next, place the beaker with the distilled liquid on a heating mantle and heat to a gel like substance. Make sure not to burn it. The next processes that will be
Ideally this should be done as soon as possible after feeding the baby to prevent any bacteria from multiplying. Extra care should be taken when washing teats to make sure any stubborn milk curds come off as these can survive the sterilising process. Also to clean the teats fully turn them inside out to wash. There are three types of sterilising: Steam Sterilising Cold water chemical sterilising Boiling 1: Steam sterilising. Steam sterilisers are quick and efficient, taking roughly 8-12 min plus cooling time and require no chemicals or rinsing.