Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Bio Practical

First two labs

QuestionAnswer
What is a Spectrophotometry Analysis of substances based on their ability to absorb specific wavelengths of light. It permits photometric readouts in transmittance, absorbance and concentration. Standard unit is nm=1X10-9m
Five steps of Spectrophotometry 1. Let it warm up for 5-10 min, plug in, turn on select wavelength 2. Label Cuvettes, glass test tubes on top 3. Make a blank 4.Each time change wavelength blank it 5. Wipe down with kim wipes
What is a Blank used for To cancel out any other effects that the other components in the solution may have on the absorbance readings
Wavelength where substance has highest absorption lambda max (h max)
How do you read a glassware's volume Meniscus at eye level
What are Transfer pipets? 1. Transfer Pipet (sim to Pasteur Pipet) Made of plastic has a built in bulb, for dropwise, not accurate. Use for one solution then dispose
What are Graduated Pipets? 2. Graduated Pipet- Specific volumes, divisions imprinted in discrete units, (10th of milliliter or hundreth ml .01, 0 @ barrel, final volume at tip. Must use right size -> Requires Pipet Pump to draw liquid into pipet.
What are Volumetric Pipets? Volumetric Pipets: fixed/variable volumes (0-20 ul, 20-200 ul, 200-1000ul) Range is indicated on it, amount dispensing shown in window. Do not adjust volume or go beyond max. Use disposable plastic tips; remove each after use. To change vol turn dial.
How do you use the Volumetric Pipet? To pick up a liquid: Push to 1st stop in AIR. In water, push fully To drop off liquid: Push to 2nd stop, then remove tip
Created by: 523971751
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards