Salifert magnesium profi test instructions

Table of Contents

CAUTION: Keep out of reach of children. Do not swallow.

THE magnesium test Can only be used in sea water.

THE calcium and the strontium will not interfere if their total concentration is between 300 and 500 ppm, which is the most common case.

INSTRUCTIONS

There will be air present just below the plunger of 2ml-1ml syringes. This is air that was present between the end of the plastic tip and the plunger. DO NOT attempt to remove this air, for example by repeatedly purging the syringe.

Pour 2 ml of water to be tested into the test tube, using the syringe.

Add 5 drops of Mg-1 reagent and stir gently for 5 seconds.

Place the plastic tip firmly on the 1 ml syringe, and fill it with Mg-2 reagent until the bottom of the black plunger is at the 1.00 ml graduation. During this operation, make sure that the tip remains immersed in the Mg-2 reagent to avoid aspirating air bubbles instead of liquid. A layer of air between the plunger and the liquid is normal. This is the air that was present between the tip of the tip and the plunger. This will not influence the result.

Begin adding Mg-2 reagent to the test tube with the 1 mL syringe until the color changes to gray or blue (whichever color you initially observed). Stir for a second or two after each drop added.

Holding the syringe with the cone upwards, read the position of the top of the plunger. Each graduation corresponds to 0.01 ml. The magnesium concentration can be obtained using the table.

Natural seawater contains a concentration of magnesium between 1300 and 1500 ppm. The concentration varies with salinity.

Too low a magnesium concentration leads to difficultiesHasmaintain proper calcium levels and alkalinity. Magnesium concentration can be increased with concentrated magnesium supplements.

Reading in ml (Step 6)	Magnesium concentration in ppm per liter (mg/L)
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
0.38	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