K19490 Dropping Point Apparatus


Test Method
Dropping point determinations are used for identification and quality control purposes, and can be an indication of the highest temperature of utility for some applications. The sample is heated at a prescribed rate in a precision machined cup whose sides slope toward an opening at its center. The temperature at which a liquid drop first falls from the cup is the dropping point of the sample.

Features and Benefits
•Conforms to ASTM D566, D4950 and related specifications


K19490 Dropping Point Apparatus
Performs dropping point determinations on lubricating greases at temperatures of up to 550F (288C). Consists of dropping point cup, test cell with accessories and oil bath with stirrer and heater. Test cell is immersed in a 400mL Pyrex™ bath for heating at the prescribed rate. A 750W variable stepless control heater and 1/40hp stirrer permit accurate, uniform control of bath temperature rate of rise. Heater assembly includes refractory top plate and reference dial.

Conforms to the specifications of: ASTM D566, D4950; IP 132; ISO 2176; DIN 51801; FTM 791-1421

Maximum Temperature: 550F (288C)

Bath Medium: A high temperature heat transfer fluid having a flash point in excess of 400C is recommended. Silicone fluid (P/N 355-001-002) is suitable.

Electrical Requirements
115V 50/60Hz, Single Phase, 6.5A
220-240V 50/60Hz. Single Phase, 3.4A

Included Accessories
Grease Cup, chromium plated brass
Test Tube with indentations
Cork Ring Guide
Thermometer Corks (2)
Thermometer Depth Gauge
Polished Metal Rod
Connecting Hardware

Dimensions lxwxh,in.(cm)
Net Weight: 11 lbs (5.0kg)

Shipping Information
Shipping Weight: 16 lbs (7.3kg)
Dimensions: 2.8 Cu. ft.

Ordering Information



Product Description

Electrical Requirements


Dropping Point Apparatus

115V 50/60Hz


Dropping Point Apparatus

220-240V 50/60Hz




Product Description


ASTM 2F Thermometer
Range: 20 to 580F


ASTM 2C Thermometer
Range: -5 to +300C


Cup Plug Gauge
Checks conformity of test cup with specifications. Per Fig. 1, ASTM D566 and Fig. 1-E7, ASTM D2265


Polished Metal Rod


Grease Cup


Test Tube with indentations


Thermometer Cork


Cork Ring Guide


When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.