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Paha777 [63]
3 years ago
8

Help………………………………………………………

Biology
1 answer:
natta225 [31]3 years ago
5 0
What’s the question?
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What are the precautions that should be token when using a photometer? please help me​
Maksim231197 [3]

Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

3. Do not use acetylene with the flame photometer

4. Over adjustment of the fuel valve will cause excess flame

Do not position the product so that it is difficult to disconnect from the mains supply

5. Do not cover the chimney whilst in use.

6. Do not block or obstruct ventilation slots /airways

7. Do not operate or handle any part of the product with wet hands

I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0
3 years ago
Ruby's father has curly hair and her mother has straight hair. Ruby, however, has wavy hair. What could be the reason for this?.
aliina [53]
The reason behind this is that <span>Ruby inherited both alleles, which are incompletely dominant. The correct option among all the options that are given in the question is the third option or option "C". I hope that this is the answer that has actually come to your great help.</span>
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4 years ago
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A plant can produce either purple flowers or white flowers. The purple flower color is dominant over the white flower color. Wha
lubasha [3.4K]
It’s 3:4 that’s the answer
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3 years ago
If the nucleotide sequence of a strand of complement Terry DNA is GTAA , What is the nucleotide sequence on the parent strand of
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The answer is CATT.

The pairs are: A/T and C/G.
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What are two things involved in a nerve impulse?
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1. Acceleration of impulse
2. Deceleration of impulse
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