What is the maximum allowable intake of Silver?

Colloidal silver is a product that can be taken safely. However, there are still many misconceptions about dosage. For example, too much silver would even give you a blue-grey color. Something that is excluded from Crystal with colloidal silver. But what does the Dutch government actually say about the maximum permitted intake of silver? You can read it on this page.

Few reference data are known about the permitted intake. As a result, we notice that the data that we are allowed to share on our site and packaging does not appeal to the imagination. We have therefore developed two examples, using the criteria drawn up by the government as a reference.

Silver intake criteria

The government has drawn up several references. The first concerns the quality requirements of the Water Supply Decree Annex A. belonging to Articles 4 to 4d inclusive. In the table below we make a comparison between what you can ingest by drinking tap water and accidentally swallowing 10 ppm colloidal silver. This table is based on drinking at least 1.5 liters of water (1500cc) per day.

Parameter Maximum value  unit Maximum value in ppm
Arsenic 10 g/l 0.01
Boron 0.5 mg/l 0.5
Cadmium 5 g/l 0.005
Chrome 50 g/l 0.05
Cyanides 50 g/l 0.05
Fluoride 1.1 mg/l 1.1
Copper 2 mg/l 2
Mercury 1 g/l 0.001
Lead 10 g/l 0.01
Nickel 20 g/l 0.02

From this table we can conclude the following: if someone accidentally ingests 5 cc of colloidal silver, you end up with 5 * 10 * 10-6 gr = 50 μg per day. This is three times as much as the poisonous lead. If you drink tap water every day for 20 years, you can ingest 109500 µg of lead. If we make the same calculation for silver, this would mean that in 20 years you could take 109500/250 = 762 times 5 days 50 µg of silver without exceeding the permitted amount of lead. This amounts to 762/20 = 38 times a year, almost every week 250 g, an almost continuous intake

MAC value silver

The second reference concerns the permitted MAC value at your workplace. The MAC value is the maximum acceptable concentration of a substance in the air at your workplace. To arrive at this concentration, an 8-hour working day and a 40-hour working week are assumed. According to this value, provided that the concentration is lower than the MAC value, you may breathe air contaminated with a substance for 8 hours 5 days a week without experiencing any health damage. The mac values ​​are determined by the government and published in the Government Gazette.

Let’s take the mac value of metallic silver as an example. The value of this is 0.1 mgr/m3. For silver compounds this value is 0.01 mgr/m3.

A maximum of 70 µg per 100 ml of blood applies to lead. An adult with an average of 5 liters = 5000 ml of blood may therefore have 5000 ml * 70 g/100 ml = μ3500  g lead  in the blood without permanent damage to health. An adult person breathes in and out more than 16000 liters = 16 m3 of air every day. This means that this person inhales an average of at least 5.3 m3 of air per 8-hour working day. Now suppose that the person works all day in an environment where the permitted amount of 0.1 mgr/m3 silver is present in the air. This means that this person ingests 5.3 m3 * 0.1 mgr/m3 = 0.53 mgr of silver. 0.53 mgr = 530 g. From these data, we can conclude that according to the government, a person who works for 40 years can be exposed to inhalation of 530 µg of silver per day.