Recommendation for exploitation of nitrate-tester "SOEKS"

Recommendation for exploitation of nitrate-tester "SOEKS" (old model)

These recommendations were made on the basis of almost 2th years (in the moment of their writing) experience of sales and exploitation of nitrate-tester «SOEKS». These recommendations for touch a 5-button model on batteries, supplied on Ukraine since August, 2010 to July 2011 (model of Nuc-019-1). Some of these recommendations can be taken and to more early variants of nitrate-tester «SOEKS».

1. Problems at the use of elements DURACELL. The producer of this battery for the increase of capacity of power element increased its sizes and, accordingly, decreased length of «plus» socle. From it there can be losing touch in a battery compartment nitrate-tester and device not included either in general or can be spontaneously turned off. It is not the disrepair of nitrate-tester. It is simply necessary to use any other high-quality alkaline batteries.

2. Problems at the use of accumulators in place of batteries. As tension of feed of two accumulators will be about 2,6 V, and a nitrate-tester for normal work needs 3 V, device or simply not swith on or will work uncorrectly (at including the special red-white illuminating from beneath it will be rptd about improper parameters).

3. Temperature range of exploitation. The enough narrow temperature range of exploitation of device which it is necessary to adhere to during the leadthrough of measurings is indicated in instruction (really this range however wider). However its impossible to use a nitrate-tester on a frost as here at the best there will be unreliable results of measurings (with understating of the real concentration of nitrates), and a device break at the worst. Also it is not necessary to expose to a nitrate-tester the extreme heating as it also does not promote him to long service (not abandon a device in the sunshine, in the salon of car in hot time, near heater devices etc.).

4. The difference of temperatures between a device and measureable product must be minimum. This recommendation to become especially actual in hot summer - nitrate-tester to be in an apartment at, for example, to 30 to the degree heat, and from a refrigerator on measuring take a vegetable or fruit the temperature of which makes 5°C (difference of temperatures, accordingly, 25°C). It is in this case possible to get the unreliable results of measurings (with the sharp overstating of the real concentration of nitrates), and at the very wide difference of temperatures a device can break – the sharp supercooling of measuring element is violated by a sensible semiconductor measuring element. It is therefore recommended before measuring to give a cold vegetable or fruit a bit to «warm» up (in an ideal - to the room temperature).

5. Correct measuring concentration of nitrates.

A). Always immerse a probe on a the same depth about 10-15 mm. Insufficient or different depth of immersion can give the unreliable result of measuring.

B). Measure products in those places which are used in food. Accumulation of nitrates in different parts of vegetable or fruit differently. In a skin, near pips or in core their concentration is higher. For example, if to be conducted measuring of grape and probe got in to the pip – a device will rotin the dangerous concentration of nitrates certainly, although in pulp of grape all can be in a norm. In case with a water-melon – it is necessary to do an incision, but not it is simple to stick a probe in a green skin. A refuse to buy or use some product in food must be based on the results of the correct measuring of his «edible» part.

C) If there is possibility conduct measurings once or twice (ordinary 2-3 times) in the different places of the same vegetable or fruit with the subsequent calculation of mean value.

6. Measuring of nitrate concentration in green-stuffs and fruit of which it is not in a list. Principle of work of nitrate-tester is based on measuring of conductivity of matter with a subsequent count in the size of concentration of nitrates in a mg/kg. List of products «sewn» up in a device set coming from the "typical" diet (in other words - ration of feed) of man of central part of Eurasia. If it is necessary to measure green good or fruit of which it is not in a list – it is needed simply to choose from a list an alike on consistency product (for example, for a pumpkin it is possible to take a cheap restaurant, for a plum - nectarines) and to conduct the ordinary measuring. Norm for a measureable product (if it is set) it is possible to know from certificate literature or estimate independently coming from possible day's receipt of nitrates and amount of the used product. Control of maintenance of nitrates in citrous (oranges, mandarines, lemons etc.) is inadvisable as the acid contained in these products actually «neutralizes» influence of nitrates on an organism (a man at the use of citrous rather will get an allergic reaction that poisoned by nitrates).

You remember – a nitrate-tester is intended for measuring only of fresh untilled vegetables and fruit for which the process of accumulation of nitrates is studied during their growth and ripening. On the results of measuring acids and salts strongly influence cut-in in a measureable matter, therefore a device can not be used for the correct measurings of nitrate concentration in water and «handmade» food stuffs – sausages, cheeses, cakes and other.