Use Of Test Tubes And Their Purpose

When observed, the water was a blue-green all the way through. This is because the seal was more than likely not tight enough around the test tube, letting oxygen into the tube, which caused the color to change.

Boynton, R.M. 1987. Color. In McGraw-Hill Encyclopedia of Science & Technology (Vol. 4, 165-166) McGraw-Hill, Inc.

7. We added 1.0 mol dm-3 of NaOH into tube #8 and than added 1.0 mold dm-3 of mold dm-3 HCl until a change in color is observed.

This test is used to detect the hemolytic activity in the bacteria. A darkish green color on the media around the bacteria would represent incomplete hemolysis. A transparent media around the bacteria colony represents complete lysis of the red blood cells. If no change is observed around the bacteria colony then the bacteria is non-hemolytic. For my

items presently in solid form in the lab kit or purchased separately for this laboratory

The nurse is preparing to administer IV fluid to a client with a strict fluid restriction. IV tubing with which feature is most important for the nurse to select?

respirometers. It is important to use about the same amount of cotton and KOH in each vial.

Laboratory Tests – All laboratory tests utilize the following reference unless otherwise specified - Pagana & Pagana (2014)

In tube 3, the water was at 40. This is still warm but not the color was not nearly as intense as the previous tube. The next tube charted was tube number 4. The beet was subjected to a temperature of only 22°c. That temperature I would chart as “room temperature”. I found that the least amount of dye was leaked from the beet. For the cold methods I concluded that the amount of betacyanin that escaped from the cell membrane was intense, like the hot treatment results. I concluded that it didn’t have to be hot temperature stress to release betacyanin. Tube number 5 was placed into the refrigerator and the level of dye that permeated the water was charted at a 6. Tube 6 was placed in the freezer and was documented at a level of color intensity of a ten. Also, when the tube was pulled from the freezer the specimen has noticeably changed. It has a slight white, almost white frost or texture to it. Please see attachment and table below.

The drops of crystal violets, approximately 15 drops, were flooded until the smear were all covered and then allowing resting for one to two minutes. After two minutes, the slide was titled over the sink and washed off, with the distilled water bottle, by aiming the stream of water above the smear. The specimen appeared blue-violet when observed with the naked eye. The drops of Gram’s iodine were applied on the slide until covered and then allowed to react for one minute or more. After the time elapsed, the slide was rinsed again with distilled water following immediate drops of Gram stain decolorizer added one drop at a time.

Cut pieces of tape, check the labels match individual I.D. for blood tubes and/or unit bags.

The monitor displays the diffusion of the dye through the bloodstream, appearing more like a moving art piece rather than a scientific demonstration.

The materials used for the first part of the experiment comprised of the following: a microscope, 4 slides, 4 slide covers, blood samples, lancet, a sheet of paper towel, 3 test tube droppers, Solutions A, Solutions B, and Solution C.

Laboratory ABC uses both glass pipettes (1mL to 5mL) and disposable plastic pipette tips- yellow (20μL), blue (1000μL) and white (5mL). Glass pipettes and white pipette tips are currently washed and reused. Blue and yellow tips are discarded.

A drop of blood is added into each test tube and they are left for 5 min.;