Before Usage
After Usage
how can you determine precautions that should be followed while using a hazardous chemical
One should not touch the optical assembly with bear hands. Optical surface of cuvettes should not be touched with fingers to avoid erratic reading. Always ensure effectiveness of silica gel kept in instrument. Preserve the instrument from dust particles. Never wash the cuvettes with chromic acid. Wash the cuvette with the distilled water and then with methanol before storage. Check the calibration status before using the instrument and ensure the timely calibration. Do not overfill the cuvettes. Perform the visual inspection of cuvettes for suitability.
Regular medications should be okay while fasting. Check with your doctor.
Magnesium ribbon is not particularly dangerous unless you ignite it. If it does catch fire, it will burn with an intensly bright white light that will burn your retinas if you aren't wearing appropriate eye protection or aren't looking away while it is burning. It is as bad as watching arc welding because of the ultraviolet light emitted. It is good form to wear eye protection in the lab at all times. While you can tear the ribbon with your fingers, it is possible that it could poke you in the eye and scratch your cornea.
1. Never heat alcohol directly on naked flame 2. you should take a beaker with boiled water in it and then place the alcohol with the test tube in it 3. you should wear goggles while heating alcohol. 4. never smell the alcohol directly after heating
vhb
Keep equipment dry.
my na
Yes. Stop using the illicit drug. What do you think.You can just wait 7-10 days.
Make sure that they are not stolen?
No. While precautions can be taken to make sure you don't catch it (as usual with the flu), there is no reason to fear it.
Stay away from it.
Anyone who starts having strange or unusual thoughts or behavior while taking this medicine should get in touch with their physician. Anyone taking benzodiazepines should not drink alcohol and should check with their physician before using any CNS depressants.
i need answer
susan
Following are some precautions to be taken while measuring length with the help of a metre scale: Scale must be placed in contact with the object along its length. Eyes must be exactly perpendicular to the point where the measurement is to be taken, to avoid parallax error. If the ends of a scale are broken/damaged we should avoid taking measurements from the end. Instead, we should place the object on any other fully visible mark on the scale (say, on 2 cm instead of 0). Then you must subtract the reading on this mark from the reading at the other end.
Yes, because francium is a strongly radioactive element.