ST213A/B/C Automatic Compaction Density Tester
Standard: ChP 0993 GB/T 5162 ISO 3953 USP EP BP
Key words:Automatic compaction density tester, Automatic loose density meter
ST213A/B/C automatic compaction density tester is designed and
manufactured in accordance with the technical requirements and
relevant regulations of the 2025 Pharmacopoeia 0993 compaction
density determination method. It is mainly suitable for measuring
the compaction density of powders.
Working principle:
The vibrating density tester fixes a powder measuring cylinder on a
mechanical vibration device, and the vibration motor drives the
mechanical vibration device to vibrate up and down. The graduated
test tube containing powder vibrates rhythmically with the
mechanical vibration device. As the number of vibrations increases,
the powder in the measuring cylinder gradually solidifies. After
the set number of vibrations is reached, the mechanical vibration
device stops vibrating and reads the volume of the graduated test
tube, According to the definition of density, the density of the
compacted powder is determined by dividing the mass by the volume.
This instrument complies with the specifications of USP (United
States Pharmacopoeia), BP (British Pharmacopoeia), and EP (European
Pharmacopoeia), as well as GB/T 5162-2006, ISO 3953:193
(Determination of Metal Powder Vibration Density). The instrument
covers various indicators in the national standard GB/T 5162-2006,
ISO 3953-1993.
Main Technical Specifications
| Display method | Touchscreen display |
| Conforms to standards | Chinese Pharmacopoeia (2025), USP (United States Pharmacopeia), BP
(British Pharmacopoeia), and EP (European Pharmacopoeia) |
| Weight of the test sample | ≤500.00g |
| Compacted specimen volume | ≤250.00ml |
| Single vibration count | ≤99,999,999 times (30,000 times as per national standards). Error
less than 1 time per 10,000 counts |
| Vibration frequency | Maximum 400 rpm (continuously adjustable from 0 to 300/400 rpm,
with the USP stipulating 300/400 rpm) |
| Vibration amplitude | Maximum 15mm (adjustable in integer values from 1mm to 15mm; 3mm as
specified in Chinese national standards; 14mm as stipulated by the
US Pharmacopeia) |
| Repeatability error | ≤1% |
| Test Stations | 1/2/3 |
| Motor allowable torque | 0.38 N.m |
| Printing function | Thermal printing |
| Power supply | AC200V ± 10% 50Hz 35W |
| Instrument dimensions | 335*290*210mm |
| Instrument weight | 15.2kg |
| Packaging dimensions | 540*415*410mm |
| Packaging weight | 19.73kg carton |
● Other requirements: The environment should be clean, free of dust
and smoke, with no mechanical vibration sources or electromagnetic
interference sources nearby
Test sample:
● Various metal powders: such as iron powder, aluminum powder,
silver powder, zirconium powder, nickel powder, tungsten powder,
tin powder, zinc powder, molybdenum powder, magnesium powder,
copper powder, and other rare metal powders, alloy powders, or
metal oxide powders.
● Various non-metallic powders: such as talcum powder, kaolin,
calcium carbonate, coal powder, fluorescent powder, brucite,
calcite, wollastonite, tourmaline, diamond, barite, fluorite,
zeolite, boron carbide, graphite, quartz, gypsum powder, bentonite,
diatomite, zirconia, corundum, mica, clay, titanium dioxide, etc.
● Other powders: such as soil, dyes, pesticides, abrasives,
coatings, food additives, catalysts, cement, mud, etc.
Selection of measuring cylinder
The powder density tester is equipped with three different
specifications of measuring cylinders: 25ml, 50ml, and 100ml (see
attachment). To improve the accuracy of testing, please refer to
the weight (m) and loose density of the tested powder( ρ) Choose a
suitable measuring cylinder.
| Volume of measuring cylinder(cm³) | Powder weight (g) | Loose density (g/cm³) |
| 25 | m≤10.0 | ρ≤0.8 |
| 10.0≤m≤20.0 | 0.8≤ρ≤2.0 |
| 20.0≤m≤50.0 | 2.0≤ρ≤7.0 |
| 50.0≤m≤100.0 | ρ≥7.0 |
| 50 | 10.0≤m≤20.0 | ρ≤0.8 |
| 20.0≤m≤50.0 | 0.8≤ρ≤2.0 |
| 50.0≤m≤100.0 | 2.0≤ρ≤7.0 |
| 100 | m≤100.0 | ρ≤1.0 |
| m≥100.0 | ρ≥1.0 |
Note: To improve testing accuracy, please choose a measuring cylinder
with a smaller volume
ST213A automatic compacted density meter, 1 hole
ST213B automatic vibrating densitometer, 2 holes
ST213C automatic vibrating densitometer, 3 holes
Note: The appearance pictures, dimensions, volume and weight of the
instrument are for reference only. If there are any updates to the
instrument, they may be slight changes without prior notice.
Instrument Quality Assurance Certificate
Shandong Shengtai Instrument Co., Ltd. provides the following
quality assurance for the instruments sold to you:
----The provided instrument materials are brand new, meet quality
standards, and have a manufacturer's certificate of conformity;
----The materials and main components provided meet the technical
requirements specified in the technical documentation;
----The overall quality assurance period of the equipment is one
year (excluding normal wear and tear of vulnerable parts).
----We are responsible for free maintenance of any instrument
quality issues that occur during the warranty period. Due to
equipment malfunction caused by the user's responsibility, we are
responsible for repairing and charging reasonable fees.
----Lifetime discounted supply of parts for equipment, and lifetime
maintenance and repair of the entire machine.
----After the expiration of the warranty period, if the user needs
maintenance and technical services, we will only charge a cost fee.
Packaging and Delivery
1. Packaging of goods: standard wooden or cardboard boxes.
2. Internal packaging: Elastic pearl cotton packaging product,
hardwood board+strong bandage to fix corners.
Package list
| No. | Name | Quantity | Unit | Note |
| 1 | Automatic compaction density meter | 1 | Set | |
| 2 | Graduated cylinder | 3 | Piece | |
| 3 | Power cord | 1 | Root | |
| 4 | Certificate of Conformity Warranty Card | 1 | Copy | |
| 5 | Instruction Manual | 1 | Copy | |
