Ordering a test by a professional EMF/EMR tester is the easy way to measure the Electromagnetic Radiation (EMR) in your house or workplace. But it usually costs a lot of money and the tester measures the EMR only for a short period of time, during the day he or she pays you a visit. However, usually the quality and accuracy of his or her equipment is very high and the official report is valid in courts and for the official authorities as evidence.
In some countries professional testers are subjective to laws and regulations that can sometimes conflict with your need for real information of value. For example, in Israel the testers are obligated to tell you the level of Radio Frequency (RF) EMF/EMR with comparison to the Israeli standard, which I believe is very high. In Israel the RF standard for RF environmental radiation is 10% of ICNIRP, which I believe is very high. In CANADA, the US and other countries the safety standard is 100% of the ICNIRP, which again is very very high. This may calm you down in some cases, but it can also blind you to a real problem of EMF/EMR in your house.
In some cases, the professional tester will know less than you do, about EMF/EMR , and its health risks and effects and about EHS. In some even more drastic cases, the so-called professional tester will know less than you, about measuring EMF/EMR.
When you do choose a professional tester it is very important to choose the right one. A good tester will do the measurement in the right way, will expose all the EMF/EMR sources in your house and outside it, will give you some advice about what to do in order to decrease the EMF/EMR levels in your house; even if it is very low in reference to the high EMF/EMR Levels standard (long obsolete regarding long exposures) and will submit a valid and truthful report.
Sometimes it is not enough to invite a professional radiation tester, since there are some differences between the world of professional measurement and the read world.
Safety Standard is a problematic term. Safety standard are set by a committee of experts who tried to validate how much radiation is safe and how much is not safe. In the process of setting the standard many aspects, other then safety or health, are taking into consideration. For example: financial, technical and political. Sometimes when you can not technically meet the standard, or meeting it will result in financial cost, the standard is gently shifted to please everyone and to save money. The international standards for low and high frequency electromagnetic radiation are very high (1000 milliGauss and 1000-470 micro watts square centimeter, respectively). Both takes into account only the immediate, obvious and permanent damage to the body and does not take into account any long-term effects. Some companies and organizations will use these outrageous high "safety standards", without explanation of the true essence of it and its limitations.
What good is this "safety standard" if a person is exposed to radiation levels lower than the safety standard, for several hours a day, every day for several years?
What good is this "safety standard" if an Electromagnetic hyper sensitive person exposure to "safe" radiation levels causes him headaches, diabetes, neurological problems, epileptic seizures, chronic fatigue and trouble ills?
What good is this "safety standard" if for a person that was exposed to radiation levels lower than the "safety standard" but still got cancer from this radiation?
What good is this "safety standard" if some studies showed damage to living cells at radiation levels 1000 times lower than the standard safe level?
There is one case in which the standard is always good. It is very good and easy to use the "safety standard" as an excuse. Once in a while companies and manufactures of services and equipment that emit electromagnetic radiation (antenna, cell phone, cordless phone, high-voltage line, transformer and electric company) use it to show that their products are safe, or in order to dismiss claims of damages to victims. For example, there are several factors that consider the very high safety standard of 1000 milliGauss (for low frequency electromagnetic radiation) as the only mandatory standard. The IEC (Israeli electric company) refers to this number as the only mandatory standard. Even if you submit them with test results showing radiation levels of 20 milliGauss , which comes from their facility, the IEC will argue that all is well according to the "safety standard". We all know that even a short stay of half an hour, the radiation level of 20 milliGauss, is not recommended.
Please notice that my recommendation have no legal validity and they are much more drastic than most other standards or recommendation. Since there is still no consensus about RF and ELF radiation health effect you need to find the levels that you accept, you need yo study and then follow what seems right.
The way the measurements and tests are performed is very important. In Israel professional testers are obligated to test the radiation levels only at the high of one meter above the floor, and one meter from the walls. Such measurements do not take into account the possibility of an employee who decides to place his chair 1 feet away from the wall which is next to a power transformers room, or another case in which a worker sits on the chair at a height of 50 centimeters above the floor when below it there is a power transformer room.
What about the baby crawling on the floor with in-floor electrical heating system? The baby will be exposed to much higher radiation levels than the levels that will be measured at a height of one meter from the floor by a licensed professional radiation tester.
Both simple and professional RF radiation meters show the RF EMF/EMR level in only a single frequency. Most of the RF meters select the frequency in which the levels are the highest and show these readings. In most cases in front of a cellphone mast you will be able to measure RF EMF/EMR in several (sometimes even more than 20) different frequencies. The meters will show you only the level of one frequency and the level will be much lower than the actual levels you are exposed to (since you are exposed to all the frequencies).
In addition, in most professional meters the tester can change the meter's setup so it will measure the RF EMF/EMR in different ways (for example - average over a few seconds or from the time the meter was turned On). Each way will lead to a different outcome. In order to understand fully the measurement that was taken you need to read the full report of the test, or to take part in the tests. Even then there is a lot of room for errors in the measurement process and configuration.
It is important to remember that in front of a cellphone mast, or in other test environments there are sometimes many sources of EMF/EMR in different frequencies, and the meter can usually measure only the highest level but can't measure or calculate all.
Measurement results can be different at different times of the day. Low frequency electromagnetic radiation levels, from the electric power network, will be higher during peak electricity consumption hours and will be lower when less people use the network. The same thing goes for radiation levels from the cellular network. When many people use the cellular network services, for example, at noon, cellular antenna radiation will be very high, when at night it will be very low. Another example is that in day time all the street lights in the city are off but at night time they are on. In this case low frequency electromagnetic radiation from the power lines will be lower in the day time and higher in the night time. Day or night, Winter or summer, when residents in your neighborhood will use more electricity, for heating or air conditioning, the electromagnetic radiation from the electricity power lines will be higher. If the professional tester will visit you at noon he might measure very low radiation compared to radiation that will be measured in the evening peak time, in residential neighborhoods (18:00-21:00). So, the hour that the test is done at has a real impact on the results of the measurements.
Radiation sources can be shut down. If a cellular company knows about the measurement it can lower the transmission levels or shut down the antenna during the test. In this case measured values will be very low compared with the actually existing values at most days when the antenna operates at full strength.
Another example is the shutdown of an entire high voltage line (electric company does it all the time to perform maintenance work on the lines or to control the power supply sources and consumption) during the measurement that will cause the measured levels to be very low compared to the daily situation when the line runs in full order.
Summing up, control over the radiation source can result in significant change of the measurements results.
As you can see now, it is not enough to order a test. You must also understand what the numbers say, how the test was done and when.
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