The Vicat Needle Apparatus is a laboratory instrument used to determine
the standard consistency, initial setting time, and final setting time of
cement paste. It evaluates how cement transitions from a fluid state to a
solid mass. By measuring the depth of penetration of various needles or
plungers into the cement paste, the apparatus helps identify when the
cement begins to set and when it completely hardens. This ensures the
cement has suitable workability for mixing, placing, and finishing during
construction. The inclusion of a dashpot mechanism ensures smooth,
controlled needle movement for precise and repeatable measurements. It is
a standard tool in quality control labs, cement factories, and construction
sites to ensure the reliability and performance of cement in structural
applications.

The Vicat Apparatus measures how deep a needle or plunger penetrates into a cement paste.

The test is conducted in three stages :

1.Standard Consistency Test

• The 10 mm plunger is lowered into cement paste.
• The depth of penetration is observed to determine the correct water content.

2.Initial Setting Time Test

• 1.13 mm needle is used.
• Needle is released every few minutes until it does not penetrate 5–7 mm from the bottom.

3.Final Setting Time Test

• Needle with annular collar is used.
• Time is recorded when the needle makes only a slight impression but the ring fails to.
• The dashpot mechanism ensures smooth descent and eliminates jerky movement, providing accurate results.

• Smooth Needle Descent with Dashpot : The integrated oil-filled dashpot ensures a controlled, jerk-free drop of the needle or plunger for accurate
  readings.
• Precision Measurement Scale : Graduated scale with 1 mm least count allows accurate observation of needle penetration during consistency and
  setting tests.
• Multi-Test Capability : Conducts standard consistency, initial setting time, and final setting time using a single, compact unit.
• Sturdy & Durable Build : Constructed from corrosion-resistant cast iron and brass parts for long-lasting performance in lab conditions.
• Easy Maintenance : Simple assembly with easily cleanable components ensures quick post-test cleanup and upkeep.
• Optional Portable Version : Compact models available with carry case for on-site and mobile testing requirements.
• Ideal for Education & Industry : Perfect for use in construction labs, cement plants, educational institutions, and research facilities