1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoray [572]
2 years ago
5

What are the precautions that should be token when using a photometer? please help me​

Biology
1 answer:
Maksim231197 [3]2 years ago
8 0

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

You might be interested in
Gel, an electronic source, and a micropipet to load the sample into the gel, are needed to make a dna
jasenka [17]
<span>DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.</span>
6 0
3 years ago
5.) What is the process by which the egg is released called?
borishaifa [10]

Answer:

5.) What is the process by which the egg is released called?

A.) Ovulation

6.) When does ovulation occur?

A.) Ovulation typically occurs about 14 days before the start of the next menstrual period.

<u>-TheUnknownScientist</u>

8 0
3 years ago
Which type of exercise most likely causes human muscle cells to perform anaerobic respiration?
harina [27]
A vigorous excersie that requires a lot of energy
4 0
2 years ago
In Avery's experiment, he used DNase, RNase or proteinase to treat the heat killed S strain to see what component in the debris
nevsk [136]

Answer:

S strain

Explanation:

The Avery experiment demonstrated DNA is the genetic material. It expanded upon the findings made by Griffith.

They used Pneumococcus; Smooth strain which was virulent and the Rough which was not.

Cultures of heat killed smooth strain were prepared after which it was treated with DNases ,RNases and Proteinases to remove DNA, RNA, and proteins respectively. It will then be introduced to living Rough strain.

When treated with RNases only the RNA will be destroyed and transformation will take place leading to colonies of S stains being formed.

Only when treated with DNase did the colonies S strain fail to be formed.

7 0
3 years ago
1. What 3 things does a cell membrane do?<br> a.<br> b.<br> c.
morpeh [17]

Answer:

look below

Explanation:

1) keep toxic substances out of the cell

2) allows certain minerals in that are needed and keeps others out and uses reciptors to do so

3) they separate vital but incompatible metabolic processes conducted within organelles

6 0
3 years ago
Other questions:
  • Consider a culture medium on which only gram-positive organisms such as Staphylococcus aureus colonies can grow due to an elevat
    10·1 answer
  • What would occur if exponential growth occurred in a population
    12·1 answer
  • What are some possible factors that could cause an animal population, like
    14·2 answers
  • How long is a term for a US senator?
    15·2 answers
  • What are the characteristics of continental tropical air
    6·1 answer
  • 2. In what ways do normal stem cells contribute to maintaining homeostasis?'
    10·1 answer
  • Explain how and why hypertonic, isotonic, and hypotonic solutions affect plant and animals cells?
    11·1 answer
  • Which plant has largest pollen ​
    10·1 answer
  • 5. Which of the following professionals has the authority to prescribe medication and treatment?
    15·2 answers
  • HELP ASAP PLEASE HELP FAST
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!