# Question: What Is A Good PPM?

## What is an acceptable ppm?

Definition: One PPM means one (defect or event) in a million or 1/1,000,000.

In the past a good supplier would have a defect rate of less than 1%, (10,000 PPM).

However, production and quality control procedures have improved and expectation was increased to 0.1% or 1,000 PPM..

## What happens if PPM is too high?

Too high: Add plain ph’d water to the reservoir and test. … If the ppm is still too high, you can wait for the plant to lower the water levels, or you can change the reservoir water altogether. Too low: Do the same as you would if the ppm were too high, but instead, top-off with nutrient-rich water.

## How many ppm is best for colloidal silver?

10 PPMWhen a silver product contains the most active species of silver, coupled with the smallest particle size and greatest amount of positively charged silver, then a safe low concentration of 10 PPM bio-active silver is all that you will ever need.

## What does high ppm mean?

2) When PPM levels are too high it’s a sign your plants have too much to eat, so you’ll want to dilute your solution with water. This will lower the PPM’s so that the concentration of nutrients is at a level that’s comfortable for your plants to digest.

## What percentage is 200 ppm?

0.02%ppm to percent conversion tableppmPercent (%)80 ppm0.008%90 ppm0.009%100 ppm0.01%200 ppm0.02%36 more rows

## What is the value of 1 ppm?

Just as per cent means out of a hundred, so parts per million or ppm means out of a million. Usually describes the concentration of something in water or soil. One ppm is equivalent to 1 milligram of something per liter of water (mg/l) or 1 milligram of something per kilogram soil (mg/kg).

## What is the difference between ppm and percentage?

A. A percent is 10,000 parts per million. In order to express the results as a percent, divide the nutrient content (which is expressed in ppm) by 10,000. For example, if the reported value for P2O5 is 2,690 ppm, the calculation to convert to percent would be: 2,690 ppm ÷ 10,000 = 0.269%.

## Is higher or lower ppm better?

PPM refers to a unit of concentration, parts per million. It’s a way to quantify very low concentrations of substances. 1 ppm is equivalent to 1 milligram per liter, or 0.0001% concentration. … But when it comes to silver, a smaller amount of total silver (PPM) can actually have more beneficial bio-active silver.

## What is an acceptable defect rate?

As an example, consider an AQL of 1% on a production run. This percentage means that no more than 1% of the batch can be defective. If a production run is composed of 1,000 products, only 10 products can be defective. … AQL is also known as the acceptable quality limit.

## How do I calculate ppm?

Parts Per Million (ppm) Concentration CalculationsWrite an equation representing the ppm concentration: ppm = mass solute (mg) ÷ volume solution (L)Extract the data from the question: mass solute (NaCl) = 0.0045 g. … Convert the mass in grams to a mass in milligrams: mass NaCl = 0.0045 g = 0.0045 g × 1000 mg/g = 4.5 mg.More items…

## What does ppm mean?

parts per millionThis is an abbreviation for “parts per million” and it also can be expressed as milligrams per liter (mg/L). This measurement is the mass of a chemical or contaminate per unit volume of water. Seeing ppm or mg/L on a lab report means the same thing.

## Why is ppm important?

PPM is a measurement that gives you an indication of the amount of nutrients present in your growing medium. This is super important as it guides your next feed and allows you to avoid over- or underfeeding your plants. Measuring PPM is simple and can be done using most pH meters.