drinkpure filter

PFAS (per- and polyfluoroalkyl substances) are a group of extremely persistent industrial chemicals. Among other things, they're used in coatings, textiles, packaging and industrial processes, and they get into drinking water via households, industry and wastewater treatment plants. Once in the environment, PFAS practically no longer break down – hence the term „Forever Chemicals“.

The PFAS filtration performance of DrinkPure was investigated in independent laboratories using quantitative analytics (LC-MS/MS). In this, 19 individual PFAS compounds were specifically spiked and evaluated individually, including short- and long-chain substances like PFOS, PFOA, PFNA, PFHxS, PFBS, PFDA, PFDoDA as well as fluorinated precursor compounds. The tests were carried out with defined input concentrations (50 ng/L per substance) and an evaluation based on the instrumentally determined measured values. For the majority of the tested PFAS molecules, the reduction was 100% down to below the respective detection limit (LOQ). Individual fluorinated transition compounds showed reduction rates between 91% and 97%. The average PFAS reduction across all tested substances was approx. 99%. In addition, it was checked whether during or after filtration there is any re-dissolution (relargage) of PFAS from the filter system. In this, no relevant PFAS concentrations above the respective detection limits could be detected in the filtrate.

Microplastics are increasingly being detected in drinking water. The long-term effects on the human body haven't yet been conclusively researched, which is why prevention plays a central role. The crucial factor here is whether a filter system can actually physically retain particles in the relevant size range. Many filters aren't fine enough for this or don't deliver consistent results.

The filtration performance against microplastics and microparticles was investigated under defined laboratory conditions. Standardized particles in the micro- and submicrometer range were used. The evaluation was carried out by quantitative particle counting before and after filtration.

Throughout the entire test period, DrinkPure showed a stable and reproducible retention rate of over 99%. A release of already retained particles from the filter system could not be detected. The results confirm a consistent physical barrier against microplastics in drinking water.

Bacteria and germs can get into drinking water from various sources, for example through pipe networks, in-house installations or stagnant water. These include coliform bacteria and Escherichia coli, among others. Even though drinking water is usually monitored, local contamination can occur, particularly in older buildings or after longer standing times.

The microbiological filtration performance was investigated in independent laboratories as a challenge test with defined germ loads. For this, raw water was inoculated with known concentrations of bacteria and then quantified microbiologically before and after filtration. The determination was carried out via culture-based methods with plating and colony counting, expressed as CFU per volume. In addition, detection limits were documented in order to reliably capture reductions down to below the respective detection limit.

For Escherichia coli, a reduction of over 99.9999% was demonstrated, which corresponds to a log reduction of at least 6. This is within the range of the internationally common requirement criteria for bacterial reduction. The results were verified across several measuring points by analyzing raw water and filtrate samples in parallel in each case. In the filtrate, the germ counts were consistently below the detection limit, while in the raw water the defined initial load was confirmed.

Rust, sediments and cloudiness often arise from corrosion in pipes, fittings or from deposits in the pipe network. These are solid particles that can be visible and impair water quality, even if they aren't necessarily harmful to health.

The retention effect against rust, sediments and cloudiness was investigated under defined laboratory conditions. For this, water samples were spiked with standardized particles. The particle size was in the relevant micro- and submicrometer range. Before and after filtration, the turbidity in NTU as well as the particle concentration were determined quantitatively.

The measurements show a reduction of the turbidity by over 99%. In the filtrate, the turbidity values were consistently below the detection or measurement limit. The results were verified across several throughput levels and show a stable, reproducible physical retention of the particles throughout the entire test period.

Limescale is formed by calcium and magnesium ions dissolved in the water. It isn't a pollutant, but it does affect taste, household appliances and fittings. Depending on the region, water hardness can vary greatly. The goal is therefore not complete softening, but a controlled reduction that improves the taste and reduces deposits.

The effect on water hardness was investigated under controlled laboratory conditions. For this, raw water samples with a defined total hardness were analyzed and the concentrations of calcium and magnesium ions were determined before and after filtration. In addition, the total hardness was measured as a calcium carbonate equivalent.

The results show a measurable reduction of the total hardness in the filtrate compared to the raw water. The reduction remained stable and reproducible throughout the entire test period. At the same time, it was confirmed that calcium and magnesium are still present in the water and no complete softening takes place. The measurement results thus prove a controlled limescale reduction that is designed for taste and everyday suitability.

Pesticides are chemical active substances used in agriculture to protect plants. These include herbicides, insecticides and fungicides, among others. These substances can get into drinking water via rain, soil and groundwater. Many pesticides are stable even in very low concentrations and are only partially removed in conventional water treatment processes.

The pesticide reduction performance of DrinkPure was investigated in independent laboratory tests under defined and reproducible conditions. Several relevant pesticide active ingredients were added to the test water in known concentrations in the low microgram-per-liter range and determined analytically both before and after filtration. The evaluation was carried out across several measuring points, distributed over the entire intended usage range up to 600 liters of filtration volume.

Across all tested active ingredients, DrinkPure showed an average reduction of over 95%. The filtrate concentrations were significantly below the initial values throughout the entire test. Even with increasing throughput, the reduction performance remained stable and reproducible. The results show that the filtration is not limited to individual substances but works reliably across different classes of pesticides.

Medication residues and organic trace substances are chemical substances that come from pharmaceuticals, household products and industrial applications. They get into wastewater through human use, wastewater treatment plants and industrial inputs, and from there partly into drinking water. Many of these substances are biologically active and effective even at very low concentrations.

The pesticide reduction performance of DrinkPure was investigated in independent laboratory tests under defined and reproducible conditions. Several relevant pesticide active ingredients were added to the test water in known concentrations in the low microgram-per-liter range and determined analytically both before and after filtration. The evaluation was carried out across several measuring points, distributed over the entire intended usage range up to 600 liters of filtration volume.

Across all tested active ingredients, DrinkPure showed an average reduction of over 95%. The filtrate concentrations were significantly below the initial values throughout the entire test. Even with increasing throughput, the reduction performance remained stable and reproducible. The results show that the filtration is not limited to individual substances but works reliably across different classes of pesticides.

Heavy metals and inorganic pollutants are natural or technically induced components of drinking water. These include lead, mercury, cadmium, arsenic, chromium as well as other metals and inorganic ions, among others. They can come from geological formations, old pipes, fittings or industrial inputs, and get into tap water that way.

The reduction performance against heavy metals and inorganic pollutants was investigated under controlled laboratory conditions. The individual metals were added to the test water in defined concentrations and determined analytically before and after filtration. The measurements were carried out across several throughput levels in order to map the filter performance across the intended usage range.

The results show a stable and reproducible reduction of the concentrations in the filtrate across all tested metals. The reduction was consistent throughout the entire test and not limited to individual substances. The test results thus prove a reliable filter performance against heavy metals in drinking water.

Chlorine is used in the drinking water supply for disinfection. It ensures microbiological safety, but can significantly affect the odour and taste of the water. In addition, chlorination can produce what are known as chlorine-related by-products, including trihalomethanes (THMs), which can also be detected in drinking water.

The reduction of free chlorine was investigated in independent laboratory tests under controlled conditions. The chlorine concentration in the raw water was set to a defined level and quantitatively determined before and after filtration. The measurement was carried out photometrically according to standardized methods for the determination of free chlorine. In addition, organochlorine by-products, including trihalomethanes, were captured analytically.

The results show a reduction of free chlorine by over 95%. The measured concentrations in the filtrate were significantly below the initial values and remained stable throughout the entire test period. Chlorine-related by-products were also significantly reduced. The tests confirm a reproducible adsorption performance of the activated carbon across the intended usage range, without signs of premature saturation.