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  #1  
Old 11/05/2007, 01:07 PM
Dejavu Dejavu is offline
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Join Date: Feb 2004
Location: Grand Rapids, MI
Posts: 456
salifert Mg test kit directions

I seemed to have lost my salifert Mg test kit directions. Does any have it and could you please post it or pm it to me.
thanks
  #2  
Old 11/05/2007, 07:01 PM
masonicman masonicman is offline
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Join Date: Aug 2007
Location: NJ
Posts: 356
Magnesium
1. Add with the 5 ml syringe 3 ml of water in the test vial.
2. Add 6 drops of Mg-1 and swirl gently for 30 seconds.
3. Add 1 spoon of Mg-2 powder (spoon inside) to test vial and swirl for 10 seconds.
4. Place the plastic tip firmly on the 1 ml syringe and draw into this Mg-3 reagent until the lower end of the black syringe part is at
the 1.00 ml mark. Ensure that during this that the plastic tip is submersed in the Mg-3 reagent to avoid that air bubbles are
withdrawn instead of liquid. An air layer between the liquid and the piston is normal.
This is air which was present between the end of the tip and the piston, this will not influence the result.
5. Start adding the Mg-3 reagent with the 1 ml syringe to the testvial until the color changes to gray or blue (whichever color is
observed first). Do this drop wise and swirl after each drop for a second or two.
6. Hold the syringe with the tip facing upward and read the position of the upper end of the black scringe part. Each division
corresponds to 0.01 ml. The magnesium concentration can be obtained from the table or by use of the following equation:
ppm Mg = (1 - reading in step 6) x 1500
Natural sea water has a magnesium concentration of approx. 1300 - 1500 ppm. The concentration varies with salinity.
Too low magnesium concentration makes maintaining correct calcium and alkalinity concentration difficult. Magnesium
concentration can be increased with Salifert`s magnesium.
Magnesium Table
Note: If you took 1.5 ml of water in step 1 then multiply the calcium values by 2!
Reading in ml`s (step 6) Magnesium Concentration in ppm
0.00 1500
0.02 1470
0.04 1440
0.06 1410
0.08 1380
0.10 1350
0.12 1320
0.14 1290
0.16 1260
0.18 1230
0.20 1200
0.22 1170
0.24 1140
0.26 1110
0.28 1080
0.30 1050
0.32 1020
0.34 990
0.36 960
0.38 930
0.40 900
0.42 870
0.44 840
0.46 810
0.48 780
0.50 750
0.52 720
0.54 690
0.56 660
0.58 630
0.60 600
0.62 570
0.64 540
0.66 510
0.68 480
0.70 450
0.72 420
0.74 390
0.76 360
0.78 330
0.80 300
0.82 270
0.84 240
0.86 210
0.88 180
0.90 150
0.92 120
0.94 90
0.96 60
0.98 30
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  #3  
Old 11/05/2007, 07:36 PM
LobsterOfJustice LobsterOfJustice is offline
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Join Date: Jan 2004
Location: Wilmington, NC
Posts: 2,989
I believe some different versions (batch numbers) have different directions.... Salifert always seems to be tweaking their kits. It seems every time I buy a new kit it has me putting in a different number of drops.
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