100 1-800-452-1261
Tris-Acetate Buffer
TAE buffer
pH 7.8 buffer for DNA or RNA electrophoresis
50X buffer concentrate
100 mL of concentrate is enough to make
5 L of buffer solution
FB0325 100 mL $23.85
U
Universal Indicator
Combination Kit
Two great indicators, one low price!
Contains one bottle (100 mL) each of the standard universal indicator
solution (pH 4–10) and the rainbow acid universal indicator (pH 1–7).
Combination kit offers great versatility for identifying the pH range and
acid–base properties of common household substances.
AP7149 2 x 100 mL $17.20
Universal Indicator Solution
pH range 4–10
color indicator chart is attached to the bottle
U0009* 35 mL $ 6.32
U0001 100 mL 8.70
U0002 500 mL 14.95
U0011 1000 mL 27.10
HAZARD ALERT: Alcohol-based solution; flammable liquid.
Storage: Organic #9 in a dedicated flammables cabinet.
If one is not available,
store in a Flinn Saf-Stor™ Can.
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Dark green liquid with slight alcohol odor.
*Special, unique dropping bottle package called a Flinn E-Z Drop™.
Universal Indicator, Color Chart
pH range 4–10
Package of 30 charts AP8765 pkg. $5.70
23/4" x 31/2"
Overhead color chart AP5367 ea. $10.75
81/2" x 11"
Universal Indicator, Red Cabbage Extract
pH range 2–11
Powdered cabbage extract. Will make gallons of red cabbage indicator
solution.
U0014 10 g $14.25
Storage: Organic #9
Disposal: #26a
Shelf Life: Indefinite, if stored in a cool, dry area.
Soluble: Water
Color and Odor: Dark maroon solid with cabbage odor.
Technical Note: Prepare a 0.2% solution to use as an indicator.
Rainbow Acid Universal Indicator, pH 1–7
U0012
Universal Indicator Solution, Rainbow Acid
pH range 1–7
color indicator chart attached to the bottle
U0012 100 mL $8.80
Storage: Organic #9
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Dark green liquid.
Technical Note: Rainbow spectrum of colors observed for pH values from
1–7. Excellent indicator to test acidity levels of common household substances.
Urea
laboratory grade, beads
NH2CONH2
F.W. 60.06
U0003 500 g $10.15
Storage: Organic #2
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water and alcohol.
Color and Odor: White, odorless solid.
CAS No. 57-13-6
V
Vanillin
Reagent
4-Hydroxy-3-methoxybenzaldehyde
C8H8O3
F.W. 152.15
V0007 100 g $19.15
HAZARD ALERT: Body tissue irritant
Storage: Organic #3
Disposal: #2
Shelf Life: Excellent, if stored safely.
Soluble: ethanol, diethyl ether, acetone
Color and Odor: Light yellow to white solid with a vanilla odor.
CAS No. 121-33-5
Vegetable Dyes
see Food Coloring Dyes and FD&C Food Dyes
Vermiculite
see Super Sorb® on page 683
Vinegar
Cider V0002 3.78 liters $10.05
White V0005 3.78 liters $10.55
Storage: Organic #1
Disposal: #26b
Shelf Life: Indefinite
Soluble: Water and alcohol.
Color and Odor: Brown or clear liquid with acetic acid odor.
CAS No. 64-19-7
W
Washing Soda
see Sodium Carbonate
Flaming Splints
Many experiments call for tests of gases with flaming splints. Flashbacks can
occur with dangerous results. The flaming splint should be held so neither
the mouth nor the bottom of the test tube is pointed at the student. Stress
this point with your students repeatedly.
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