YJ-0614D Automatic Drug Drop Tester

This instrument is applicable to the Method 1: Electric Block Air Heating Method for Drop Point Determination 0614 in the 2025 edition of the Chinese Pharmacopoeia, which refers to the temperature at which the first drop of liquid drips from the grease cup of the sample under specified standard conditions. It is specially applicable to test samples such as medicinal greases (white petrolatum, yellow petrolatum), part of edible waxes (such as palm wax), grease additives; lubricating greases, paraffin wax, microcrystalline wax, beeswax (for cosmetics), pharmaceutical preparations (such as suppositories), synthetic waxes (resin wax, rosin wax), ointment bases (hydrocarbon bases); emulsion bases (glyceryl stearate combination), other semisolid bases (base materials for ointments and medicinal ointments), suppository bases (synthetic glycerin fatty acid esters); cosmetic raw materials, lipstick bases (mixture of beeswax and ozokerite), etc. This automatic instrument also meets the standards of ASTM (D3204, D3461, D3954, D6090), DIN (51920), ISO 4625-2, the European Pharmacopoeia, and SH0678.

I. Main Functions and Features of the YJ-0614D Automatic Drug Drop Point Tester

1. Heating Furnace Structure: The heating furnace includes a heating body with a built-in heating sheet and a platinum resistance sensor; the middle hollow slot is the sample chamber for placing the sample testing assembly, which includes a grease cup chuck, a grease cup filled with sample, and a grease cup slit at the lower part. There is a light source below the heating body, which emits light through the slit hole of the slit sleeve and illuminates the signal sensor. When the sample softens and drips to block the light hole, the signal sensor sends a signal, and the instrument records the temperature.

2. Sample Testing Assembly: The middle is the grease cup for placing the sample; the upper part is the chuck for clamping the upper end of the grease cup and connecting the handle; the lower part is the slit sleeve for transmitting light and catching the dripping sample when the drop point is reached.

3. Inspection of the Assembly Slit Sleeve: Enter the main interface, click the "Test" button, set the preset temperature to no more than 40°C, click the "Automatic Detection" button to enter the automatic test interface.

4. Place the empty grease cup sample assembly vertically into the sample chamber of the furnace, align the lower observation port of the slit sleeve to the front, and make the light transmission hole of the furnace parallel to the light transmission hole of the slit sleeve to ensure that the detection hole can transmit light.

5. This instrument is easy to operate, with automatic temperature control and automatic result output.

II. Main Technical Parameters of the YJ-0614D Automatic Drug Drop Point Tester

1. Drop Point Measurement Range: Room temperature to 300°C

2. Measurement Mode: Automatic measurement

3. Linear Heating Rate: 0.2, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0 (°C/min)

4. Measurement Repeatability: ±1.0°C when <200°C; ±1.0°C when 200°C-300°C

5. Minimum Reading Value: 0.1°C

6. Instrument Weight: 11kg

III. Relevant Provisions of Method 2: Electric Block Air Heating Method for Drop Point Determination 0614 in the 2025 Edition of the Chinese Pharmacopoeia

Method 1 is used for the determination of easily pulverized solid drugs

(2) Electric Block Air Heating Method

An automatic or semi-automatic drop point tester shall be used.

Take an appropriate amount of test sample that has been dried (see Method 1 (1) for details), place it in the metal grease cup for drop point determination (same as in Method 1 (1)); when the drop point tester is heated to about 10°C lower than the specified lower limit of the drop point, insert the metal grease cup containing the test sample into the heating block, continue heating, adjust the heating rate to 1.0-1.5°C per minute, repeat the determination 3 times. If the difference between the drop points measured in the 3 determinations is not more than 1°C, take the average value as the result.

0, 3.0, 4.0, 5.0 (°C/min)

4. Measurement Repeatability: ±0.5°C when <200°C; ±1°C when 200°C-300°C

5. Minimum Reading Value: 0.1°C

6. Instrument Weight: 11kg