LaMotte Greenhouse Soil Testing Outfit GS-02 - Manual (Page 6)

pH
QUAN TITY CON TENTS CODE
60 mL *Hydroculture pH Indicator *5132-H
3 Test tubes, 5 mL, glass, w/caps 0230
1 Soil Comparator, pH, 4.8 - 7.6 5304
*WARNING: Reagents marked with a * are considered hazardous substances.
Material Safety Data Sheets (MSDS) are supplied for these reagents. For your
safety, read label and accompanying MSDS before using.
PRO CE DURE
1.
Fill a test tube (0230) to 5 mL line with soil extract.
2. Add 10 drops of *Hydroculture pH Indicator (5132). Cap and invert
to mix.
3. Place test tube into the Soil pH Comparator (5304). Match sample
color to a color standard. Record as pH.
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NI TRATE NI TRO GEN
QUAN TITY CON TENTS CODE
60 mL *Mixed Acid Reagent *V-6278-H
120 mL *Mixed Acid Reagent *V-6278-J
5 g *Nitrate Reducing Reagent *V-6279-C
3 Test tubes, 2.5 & 5 mL, glass, w/caps 0820
1 Spoon, 0.1 g, plastic 0699
1 Nitrate Nitrogen Comparator 5300
1 Dispenser Cap 0692
*WARNING: Reagents marked with a * are considered hazardous substances.
Material Safety Data Sheets (MSDS) are supplied for these reagents. For your
safety, read label and accompanying MSDS before using.
NOTE: Place the Dispenser Cap (0692) on the Mixed Acid Reagent
(V-6274). Save this cap for refill reagent.
PRO CE DURE
1.
Use a 1 mL pipet (0354) to transfer 1 mL of soil extract to the 25 mL
graduated cylinder (0417). Dilute to 25 mL line with deionized water.
2. Fill a test tube (0820) to the first line with diluted soil extract.
3. Dilute to second line with *Mixed Acid Reagent (V-6278). Cap and
mix. Wait 2 minutes.
4. Use the 0.1 g spoon (0699) to add one level measure (Avoid any
excess) of *Nitrate Reducing Powder (V-6279). Cap and mix by
inverting 30 to 40 times in one minute. Wait 10 minutes.
5. Insert test tube into Nitrate Nitrogen Comparator (5300). Match
sample color to a color standard. Record as Nitrate Nitrogen.
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