Preservative Content Test

Protheragen-ING provides a comprehensive range of laboratory testing services including preservative content testing. The tests are specifically designed to analyze and determine the preservative content in a wide range of products to ensure compliance with industry standards and regulations.

Comprehensive Test Services

Protheragen-ING's preservative content testing services include:

Sample Preparation

We assist in proper sample collection and preparation to ensure accurate and reliable results.

Preservative Identification and Quantitative Analysis

We use a variety of techniques, such as high-performance liquid chromatography (HPLC), gas chromatography (GC), and gas chromatography-mass spectrometry (GC-MS), to identify and quantify the presence of specific preservatives in your products. HPLC is currently our most widely used preservative analysis method.

We determine the exact concentration of the preservative through precise quantitative analysis, providing you with detailed information about its content.

Preservative Content Test Sample.

Protheragen-ING can test commonly used preservatives in cosmetics including but not limited to the following.

Methylisothiazolinone 2-Bromo-2-nitropropane-1,3-diol Methylchloroisothiazolinone
Benzyl Alcohol Methyl 4-Hydroxyparaben Benzoic Acid
Ethyl 4-Hydroxyparaben Phenoxyethanol Butyl 4-hydroxybenzoate
Benzoic acid, its salts and esters Isobutyl 4-Hydroxyparaben 3-Iodo-2-propynylbutylcarbamate
Propyl 4-Hydroxyparaben Butyl 4-Hydroxyparaben Hexetidine (INN)
4-Chloro-3,5-xylenol 4,4-Dimethyl-1,3-oxazolidine Pyrithione zinc (INN)

Method Validation

Protheragen-ING test methods are validated against industry standards to ensure accurate, precise and reproducible results.

Customized Test

Protheragen-ING understands that different products have unique requirements. Therefore, we offer tailor-made test methods to meet your specific needs and regulatory obligations.

Comprehensive Report

You will receive a comprehensive report summarizing the test results, including the preservatives detected and their concentrations. If necessary, our experts can also explain the findings and provide recommendations.

The Importance of Protheragen-ING Testing

Preservatives play a vital role in maintaining the quality and safety of a wide range of products such as cosmetics, personal care products, pharmaceuticals, and food and beverages. They help prevent microbial growth, extend shelf life and protect against contamination.

However, excessive or insufficient preservatives may adversely affect product stability, efficacy and consumer safety. For example, excessive preservatives in cosmetics can cause skin irritation, accelerate skin aging and accelerate skin pigmentation.

Preservative Content Test.

Our preservative content testing services can help:

Ensure the safety, quality and compliance of your products with our preservative content testing services. Contact us today to discuss your testing requirements or to request a quote. We will respond within 2-4 working days.


Daily: 9.30 AM–6.00 PM
Sunday : 9.30 AM–1.00 PM
Holidays: Closed

  • Tel:
  • E-mail:
  • Address:
  • WhatsAPP
Privacy Policy | Cookie Policy
Copyright © Protheragen-ING. All Rights Reserved.
Member of