Surface active agents — Determination of apparent density of pastes on filling
Surface active agents — Determination of apparent density of pastes on filling
Мы хотим включить аналитику посещений, чтобы понимать, что искать людям на сайте. Без вашего согласия счётчики не загружаются. Политика конфиденциальности
ISO 1064:1974 is an international standard published by the International Organization for Standardization (ISO) that specifies a laboratory method for determining the apparent density of surface active agents presented in paste form. This standard focuses on measuring the apparent density of pastes, ointments, and similar viscous products during the filling process. Accurate determination of apparent density is critical for quality control and formulation consistency in industries dealing with surfactants and paste-like materials.
Apparent Density Measurement The standard defines a laboratory procedure to measure the apparent density of pasty surface active agents at a controlled temperature of 20°C. It involves filling a known volume container under controlled pressure and conditions.
Test Apparatus The method requires specific equipment, including:
Test Procedure The procedure involves placing the sample in the steel tube, inserting the piston with additional weights to ensure a steady flow, and slowly lowering the container to be filled from below. The air trapped is released via an annular space between the tube and container. After filling, excess sample is trimmed to create a level surface.
Calculations and Results Apparent density (in grams per milliliter) is calculated by weighing the filled container, subtracting container mass, and dividing by container volume. The average of five determinations is recommended for accuracy. Repeatability requires results between duplicate tests by the same operator not to differ by more than 0.1 g/ml.
Documentation Complete test reports must include paste identification, concentration, measurement temperature, container volume, filling time, sample weight, and any deviations or unusual observations.
ISO 1064:1974 is especially relevant for industries and laboratories involved in:
Surfactant Paste Manufacturing Ensuring consistent batch density for quality and performance characteristics.
Pharmaceuticals and Cosmetics Formulating ointments, creams, and gels where accurate density impacts dosage and texture control.
Chemical Quality Control Standardized density data supports product specification and regulatory compliance.
Research and Development Facilitating comparative studies of surface active agents in paste form to optimize formulations.
While ISO 1064:1974 specifically targets apparent density measurement of paste form surface active agents, it interfaces with related standards including:
ISO Methods for Surfactant Sample Preparation Guidelines for preparing representative test samples of surface active agents in various states.
ISO Standards on Density Measurement Broader density determination methods for liquids, solids, and powders complementing paste measurements.
Industry-specific Standards Pharmaceutical and cosmetic standards that reference density as a critical quality parameter.
Keywords: ISO 1064, apparent density, surface active agents, surfactant pastes, density measurement, laboratory method, paste filling, quality control, pharmaceutical ointments, cosmetic creams, standard test procedure.
Упомянутые в описании и другие стандарты ISO