PEMF and EMF testing of Ereada Professional mats

Summary of PEMF and EMF testing of Ereada Professional mats

Ereada Grey and Purple mats feature Pulsed Electromagnetic Fields System. The PEMF function allows selecting frequencies of 1-8 levels by pressing the PEMF button repeatedly. It is adjustable in the range between 8 and 64 Hz, with an 8 Hz increment. Also, you can select the program "9," randomly changing all frequencies in this range every half-second. Purple Mini Mat’s PEMF frequencies are not adjustable (50 Hz only)

Once activated, any PEMF program is ON for 20 minutes and OFF for 100 minutes, a total of 4 cycles repeat, the full program length is 6 hours 20 minutes, then it auto-off.

The mini mat has two PEMF coils, the midsize mat comes with three coils, a professional one with four coils, and the single-size mat has five PEMF coils across the central line in the upper half of the mat.

Please download the PDF file here.

Summary of PEMF and EMF testing of Ereada Professional mats

PEMF for different PEMF settings over one coil

Researched by C.D. Lytle, Ph.D., in January 2020

Mat: Ereada Grey Professional Amethyst Mat

Mat settings: PEMF variable, 0 heat, ION off

Magnetometer: EMF Tester PCE-EMF 823

The range used: 0 - 20000 mGauss

The instrument was positioned vertically over coil at 8.5 inches from the top of crystal mat*

PEMF values for different PEMF settings of one coil

PEMF setting Meter reading Quoted levels

# mGauss Frequency Gauss

440 8 100
980 16 125
1500 24 150
2100 32 200
2500 40 250
3100 48 300
3900 56 350
4100 64 400

*The sensor of the magnetometer is located in the center of the top end of the meter. When the meter is placed vertically, the sensor is closest to the mat surface. If the meter were placed horizontally, the sensor would actually be 5/8” above the mat surface, resulting in a lower meter reading.

Conclusions:

Measured values are roughly 1 % of quoted PEMF coil values (measured on the bare coil), presumably because of mat thickness, distance, and materials between the coils and the magnetometer sensor.
Measured values for settings #1 and #2 were lower than the 1% values, presumably because those frequencies were outside the bandwidth of the PEMF meter (30-300 Hz).
The readings are consistent with the individual EMF pulses being of equal magnitude and proportional to the PEMF setting numbers.

Profile of PEMF along the center length of the mat

Mat: Ereada Grey Professional Amethyst Mat

Mat settings: PEMF #8, 0 heat, ION off

Magnetometer: EMF Tester PCE-EMF 823

The range used: 0 - 20000 mGauss

The magnetometer was laid horizontally on the mat to reduce the effect of uneven surface; the sensor was 5/8” (1.6 cm) above the mat surface. Distance from PEMF coil to mat surface is unknown.

PEMF measurements made along the centerline over peak readings of coils distances measured from the top edge of crystal tubes

Distance from top Uncovered mat Covered** mat

Inches mGauss mGauss

4 370 470

8.37* 2820 1990

12.75 790 680

17* 3250 2060

21 810

25* 3340

29 350

32.5* 2980

37 260

44 40

* Denotes PEMF peaks, presumably over PEMF coils, evenly spaced along the centerline of the mat

Covered**: Two Ereada covers plus a bedsheet plus a knitted afghan

Conclusions:

The highest readings on the uncovered mat, presumably above PEMF coils, were approximately 3 Gauss (~0.75% of the quoted value of loops). When the meter's sensor had been directly on the mat surface, readings were 3540-4100 milliGauss over the first PEMF coil. The values over the inner-most coils (located at 17 and 25 inches) were slightly higher than over the outer coils (8+ and 32.5 inches). Similar for between coils.
The covers reduced the PEMF readings by about 30%, presumably because of thickness/distance from coils. Profile of PEMF across the mat at different intervals from top

Mat: Ereada Grey Professional Amethyst Mat

Mat settings: PEMF #8, 0 heat, ION off

Magnetometer: EMF Tester PCE-EMF 823

The range used: 0 - 20000 mGauss

The instrument was laid horizontally onto the mat; the sensor was 5/8” (1.6 cm) above the mat surface.

PEMF measurements made along lines parallel to crystal tubes, at distances measured from the top

*measurements associated with apparent coils

Conclusions:

A significant drop of PEMF from maximum typically occurred within 1-2 inches.
Dropoff was asymmetric with higher PEMF values on the left side, perhaps because that side was depressed more from use.
There were also some irregular high readings on the left side.

PEMF measured at different heights over one coil

Mat: Ereada Grey Professional Amethyst Mat, uncovered

Mat settings: PEMF #8, 0 heat, ION off

Magnetometer: EMF Tester PCE-EMF 823

The range used: 0 - 20000 mGauss

The instrument was held vertically over the mat.

PEMF measurements above high PEMF value*

Height above mat surface PEMF

Experiment 1 Experiment 2

Inches mGauss

3540 4100
1270 1550
700 780
390
210 220
150

* measured at 8.25 inches from the top of mat over the first coil

Distribution of 100 mGauss PEMF over covered* mat

Mat: Ereada Grey Professional Amethyst Mat

Covered*: Two Ereada covers plus a bedsheet plus a knitted afghan

Mat settings: PEMF #8, 0 heat, ION off

Magnetometer: Trifield Meter, the range used: 0 - 100 mGauss

Position above mat for 100 mGauss reading

Distance from Distance from Height above mat that read 100 mGauss

top of mat right side of the mat

(inches) (inches) (inches)

4 6.5 6

13 7.75

8.5 6.5 6.5

13 9

19.5 8.5

12.2 6.5 7

13 8.5

19.5 9

17 6.5 6.5

13 8.5

19.5 9

Conclusion:

There is a ‘cloud’ of 100 mGauss PEMF over at least half of the mat extending at least 6 inches above the covered mat

Effectiveness of EMI (Electro-Magnetic Interception)

Mat: Ereada Grey Professional Amethyst Mat, covered

Covered*: Two Ereada covers plus a bedsheet plus a knitted afghan

Mat settings: Heat at #7, PEMF off, ION off

Magnetometer: Trifield Meter, range used: 0.2 - 3 mGauss

Position on the mat for EMF reading above 0.2 mGauss*

Distance from Distance from EMF reading

top of mat left side of the mat

(inches) (inches) (mGauss)

5.5 13 1.8

44.5 13 2.4

58 2 1.8

* No readings over the mat were at or above 0.2 mGauss, the limit of detectability of the meter, except the “hot spots.” Also, when the heat setting was reduced, the readings over the “hot spots” immediately dropped to undetectable.

Conclusions:

Three ‘hot spots’ were located.
Two such ‘hot spots’ were in line with the PEMF coils, but not over them.
The third ‘hot spot’ was in the far corner of the heated portion of the mat.
The ‘hot spots’ relate to the safety sensors or bimetal switches functioning.
The EMF reading at the Controller Plug was 25 milliGauss, which dropped to 1 mGauss 5 inches away.

Ereada Corp is grateful to C.D. Lytle, Ph.D., for data collection, testing the mat, meticulously researching, and preparing this report!

Carl, thank you so much for your attention, time, and assistance!

DISCLAIMER: Ereada® Warming Amethyst mattresses and other products are not intended to diagnose, cure, treat, mitigate, or prevent any disease, illness, or medical condition or substitute medical treatment of any kind or to affect the structure or any function of the body. Ereada® products are non-medical, non-medicinal, consumer, home-use appliances only for general comfort and well-being. We do not make any explicit or implied health or disease treatment/prevention claims for these products. These products and statements have not been evaluated or approved by the FDA. FDA registration of the manufacturer does not mean that the product is intended or recommended for medical use, treatment of any diseases or medical conditions, or can be a replacement or substitute for doctor’s advice, traditional therapy, or medical care. There are contraindications for other spas, magnetism, thermal sessions, or sauna use such as pacemakers, organ transplants, fever, acute infections and inflammation, pregnancy, mental disability, and others. Please consult with a physician before the use of these products. If you are immobilized, have any disease or health conditions, or take medicines, ask your doctor about how to use these products safely. Any information here is not a substitute for health professional advice and does not reflect or represent product claims. Specific medical advice should be obtained only from a licensed health care professional. All the data, specifications, and testing results are indicative and subject to change. They are not guaranteed to be errorless and are only for informational purposes. Any usage of these materials is allowed only with the written agreement of Ereada Corp.