Laboratory Apparatus #3811190

To know C.B.R. Values insitu, it is useful in determining the load carrying capacity in the field when in-place density and water contents are such that the degree of saturation is 80 % or greater, when material is cohensionless and coarse grained, such that it is not effected by changes in water contents and when the material has been in-place for considerable time. The loading is effected by means of a mechanical load frames which can be fixed to the under side of a truck.Consists of a mechanical screw loading jack, 10, 000 kg. capacity with U-bracket and swivel head. Penetration piston, 50 mm dia. threaded at the upper end. Extension rods consisting of 2 lengths 5 cm. 2 lengths 10 cm., 1 length 30 cm., 1 length 50 cm., and 1 length 100 cm., used as spacers between the proving ring and penetration piston. The lengths are machined from steel tubing. Connector set, has eight connectors for coupling the penetration piston and proving ring assembly either directly or through extension pieces. Dial gauge support of seamless pipe construction. It stands 30 cm high and 45 cm wide at the base. Provided with a quick release screw type clamp capable of sliding and locking anywhere along 2 meter length of the bridge. Supplied with annular metal weight 5 kg., 250 mm dia with 53 mm dia central hole, Slotted metal weight 5 kg., 215 mm to 250 mm dia with 53 mm dia slot, 2 Nos. Slotted metal weights, 10 kg., 215 mm to 250 mm dia with 53 dia slot 2 Nos.

For determination of the direct shear strength of soils on specimen size 60 mm x 60 mm x 25 mm. The apparatus comprises of the following:Loading Unit: Supplied with load yoke with direct and lever system for applying load. Normal stress capacity 8 kg/sq.cm. Load is applied either directly or through a counter balanced detachable lever. Provision is made for the load to be applied either through a steel ball recessed in the loading pad or direct through a boss on the pre calibrated loading yoke, the loading unit is provided with V strips and roller strips for frictionless movement of shear box housing.Shear Box Assembly: Comprising Direct Shear box in two halves for a square specimen size 60 x 60 x 25 mm one pair of plain gripper plates, one pair of perforated gripper plates, one pair of porous stones, one top loading pad. Shear box housing: Accommodates the Direct Shear Box assembly. Complete with two ball roller strips.Specimen Cutter: For cutting 60 x 60 x 25 mm specimen from larger samples.Set of weights to give a normal stress of 3 kg/sq.cm. through lever as follows:To give Kg/sq.cm.-Qty. 0.05 4 Nos. 0.1 1 Nos. 0.2 1 Nos. 0.5 3 Nos. 1.0 1 Nos.Complete set as above but without proving ring.

The apparatus consists of main cooling bath (made of SS), stand unit with drain plug & cover with provision for fitting thermometer & for adding freezing mixture. A glass jar for holding oil is provided with metallic Jar. The instrument is supplied with insulated body. These are available in three sizes:- Single Test, Four Test, Six Test Model with insulated outer body. The refrigeration Model also available to test the oil sample up to -30 C range.

Used to determine the durability and abrasivness of tablets. A transparent perpex drum (made of perspex sheet) 300mm dia x 35mm deep and white cover disc and nut, also a shaped radial fixed blade which carries the tablets along with it up to the central height and lets them off while the drum is rotating. Thus the tablets rub against each other without any hard impact. The drum rotates at a fixed speed of 30 RPM by a geared motor and the rotation period is controlled by a timer per determined end preset. The motor unit is housed in a shaped MS cabinet with shaft extended on one side upon which the drum rotates. Switches with neon indicators and time switch are fitted on a panel and provided work on 220 Volts 50 C/s AC. Available in single & double drum. Digital models available.

Specially designed to study the packing down of powder beds of different powders fitted with Digital Counter facility, starts automatically on attaining the pre-set strokes provided without Graduated Glass Cylinders of 50/100 ml capacity.

Thermal Stability Test Apparatus is used to measure/ check Thermal stability of PVC insulation & sheath of Electric cables as per IS:5831.Measures Thermal stability time in minutes required to change the pH value of 5 to 3 of a universal indicating pH paper placed in a glass tube containing sample and heated in a thermostatically controlled heating chamber at specified temp. of 200C 0.5C.New Model incorporates a specially designed heating block which eliminated use of expensive silicone oil as in a conventional model.

The apparatus is used for determining the workability of fresh concrete, provided the maximum size of the aggregate does not exceed 38mm. The test is particularly useful for concrete mixes of very low workability where true slump values are not reliable. It consists of two rigid conical hoppers and a cylinder mounted on a rigid metal frame. The lower openings of the hoppers are fitted with hinged trap-doors having quick release catches. A circular metal plate is provided to cover the top of the cylinder. Supplied complete with one plaster's trowel and one tamping rod, 16mm dia x 600mm long, one end rounded.

The Unit is used for determination of dissolution test of tablets. Complete with water bath to hold the temperature at 37C through out test. A cylindrical vessel with flanged side is fitted to hold the Motor. Speed is controlled with speed regulator to maintain the required RPM. Available in Single Test, 3 Test and 6 Test models. Also available with Digital R.P.M. Meter and Digital Temp. Meter

The test is applicable to hot mix designs using bitumen and aggregates upto a maximum size of 25mm. In this method, the resistance to plastic deformation of cylindrical specimen of bitumenous mixture is measured when the same is loaded at periphery at 5 cm per min. This test procedure is used in designing and evaluating bituminous paving mixes. The test procedure is extensively used in routine test programmes for paving jobs. There are two major features of the Marshall method of designing mixes namely, a) Density voids analysis b) Stability flow tests. The marshall stability of mix is defined as a maximum load carried by a compacted specimen at a standard test temperature of 60C. The flow value is deformation the marshall test specimen under goes during the loading upto the maximum load, 0.25 mm units. In this test and attempt is made to determine optimum binder content for the type of aggregate mix and traffic intensity.The apparatus consists of :1) A loading unit motorized, capacity 5000kgf with two telescopic pillars and an adjustable cross head. Limit switches are fitted inside to control upward or downward movement of the pillars. On-off reversing switch and indicator lamps are on the front side while a hand wheel to manually move the pillars is on the right. The load frame has fixed speed of 5.08cm per minute. Operated on 230 Volts A.C.2) 1 No. Compaction pedal with specimen mould holder.3) 2 Nos. Compaction Rammers, 4.5kg weight and free fall 45.7cm.4) 1 No. Breaking head assembly with provision to fix flowmeter.5) 3 Nos. Specimen mould 10.16cm I.D. x 7.6cm high with base plate and extension collar.6) 1 No. Kit for specimen extraction, consists of one each load transfer bar, steel ball, specimen extracting plate.Accessories :(a) Integral type Proving Ring capacity 3000 kgs.(b) A dial gauge 0.01 x 25mm(c) Universal Water Bath S.S. with false bottom and pyramid shaped lid to accomodates 3 Nos. marshall specimen(d) Thermometer 0 - 250C x 1C

This instrument is used for determining the time setting of hydraulic cement. It consists of a base with a vertical shaft and two horizontal arms. The lower arm is adjustable for height. 1 No. Initial Needle 1/12 inch dia 1/4 lb.wt. 1No. Final Needle 1/12 inch dia. 1lb.wt. 1No. Glass base plate. Complete as above.

The apparatus is used for determining the fineness of cement in terms of specific surface expressed as total surface area in square centimeters per gram of cement. This is a variable flow type air permeameter.The apparatus consists one each of permeability cell 12.5mm I.D., Manometer 'U' type mounted on stand with a built in stop cock, Perforated disc, Plunger Rubber stopper, Rubber tube 30cm long. Packet of 12 filter paper discs and a bottle of 100cc dibutyiphthalate liquid.Spares and Accessories: Punch to cut filter paper discs. Non-perforated disc. Suction bulb

The apparatus consists one each of Compaction Mould Gun Metal, 100 mm I.D. x 127.3 mm height x 1000 cc. volume, complete with collar and base plate. Rammer 2.6 kg x 310 mm controlled fall.

This instrument is used for determining the normal consistency and setting times of cement and 'A' Class limes.The apparatus consists of a metallic frame bearing a freely movable rod with a cap at top, one vicat mould, split type and glass base plate and one set of needles one each initial needle, final needle and consistency plunger.

For measuring the resistance of aggregate to crushing. It consists of M.S. cylinderical container 150mm 0.5mm dia x 130mm to 140mm height with base plate 200 to 230mm/sqr x 6mm thick. Comes with a plinger of 148mm 0.5mm dia x 100 to 115 mm height. Supplied complete with tamping rod, 16mm dia x 600mm long, one end rounded. Also comes with one metal measure 115 0.5mm dia x 180 0.5mm height.

For determination of (OPEN CUP) flash & fire points of petroleum and other liquids except fuel oils and those materials having an open cup flash below 79 C (175 F). The apparatus consists of a machined brass oil cup with handle. This rests on a heating plate which is covered with insulated board to prevent heat loss. There is a thermometer clip and test flame arrangement with swivel joint for passing over liquid in the prescribed manner. Electrically operated heater is provided with temperature regulating device. Suitable to work on 220 V AC, 50 HZ mains.

For determination of closed Flash Point of Fuel Oils, Lubricating Oils having a flash point above 49C (120F). The apparatus consists of a brass test cup with handle removable cup cover with spring operated rotating shutter having pilot jet, stirrer with flexible shaft. The complete assembly rests in an air bath which is covered with dome shaped metal top. The cup is fitted with insulated handle and locking arrangement near cup flange. The whole arrangement rests on a round shaped heater body with temperature regulator. The Instrument is suitable to work on 220 V AC, 50Hz.Also available with digital temperature controller and indicator.

This Apparatus determines the melting point of variety of products. It consists an aluminium block accepting 3 capillaries & a thermometer. It has a built in electric heating element. The temperature is controlled by energy regulator. Maximum temperature can be 350C. An adjustable lens is provided for viewing exact melting point.Also available with digital temperature indicator.

It is used for finding out Saybolt viscosity of fuel oils and lubrication oils by Universal Jet and FUROL Jet methods. The apparatus consists of Brass Chromium Plated cup centrally placed in a water Bath. The bath has a lid which contains a water cooling tube, two handles with two stirrer blades, thermometer socket and a heater. The stirring of liquid is done by hand with turn table arrangement. Temperature is controlled by an energy regulator. The Instrument is suitable to work on 220 V AC, 50Hz.Also available with digital temperature controller and indicator.

Penetration is a measure of consistency to determine the plasticity of substances. It is measured by the distance a standard cone or needle will penetrate the surface by a free fall of a standard temperature. Penetration Apparatus is used in production for controlling the consistency of solid, Plastic, Semi-Solid & Viscous materials. Petroleum & Petro-Chemical, Plastics, food, paper, confectionery, cosmetics, Rubber & many other Industries have application for Penetrometer Apparatus. It is used for penetration test on a wide variety of materials such as grease, petroleum, bitumen, tar, wax, polish, food stuff, rubber, asphalts and pharmaceutical creams.This apparatus consists of a head support mounted on a vertical rod which can be adjusted for height. A rack & pinion & pointer assembly provides fine adjustment of cone or needle tip to sample & incorporates a slipping clutch mechanism which makes reading of Penetration & subsequent resetting a simple & accurate operation. The dial is graduated from 0-400 in one tenth millimeter subdivision. The Instrument is supplied with weights & sample containers.

A 90 mm high metal frame having trough of 115 x 40 x 10 mm size. Frame having 6 holes fitted with corks. Through which pan capillary tubes of different bore; 150 mm in length.

Comprising two iron casted stand of 180 mm height joined by two chrome plated rods, with an expansion rod, length 380 mm, fixed on one stand & resting on a Friction pointer placed at the other. With graduated scale 0-90 with 3 expansion bars of Iron, Aluminium, & Brass.

The elongation of rod is measured by a micrometer screw. The brass tube is 500 x 25 mm C.P. With inlet & outlet tubes for steam & opening for thermometer reading to 1 x 110C. The binding posts are provided on the supports for connecting a bell, buzzer, or galvanometer for indicating the exact point of contact of the screw. Provided with three rods of Brass, Iron, & Aluminium.

A copper cylindrical vessel of 105 x 85 mm is fitted with 5 different rods of copper, brass, iron, aluminium, & zinc. All rods 150 x 3 mm & each having adjustable index mark at its base.

For determining maximum density of water, made of G.I. sheet cylinder 50 mm diameter x 300 mm height mounted on a base having two tubulators for thermometers, with a gallery of 60 mm x 150 mm for placing mixture of ice and salt. The respective temperatures of water at the top and bottom of the inner cylindrical vessel are measured over a period as the water cools.

With a glass U tube with a bulb & tap at the upper end of one limb, other limb open. From the bottom of the U is an outlet tube which passes through a bung & terminates into a tap. The bulb has a capacity of 7 cm & the stem beneath is graduated 3 x 0.1 cm allowing for expansion over a range of 100C. The apparatus can be supported by a single clamp & only 20 cm of mercury is required.

Sturdy construction with hand rotating device in vertical plane. In this experiment, work is converted into heat caused by the friction between two well fitting gun metal cones. The inner cone is fitted with a known quantity of water & thermometer is held stationary (while the wheel is in motion) with the help of counter torque applied to the bigger round wooden disc by cord & slotted weights. A counter is fitted for recording the number of revolutions. A slot is provided in the metallic frame to adjust the belt.

For determination of coefficient of absolute expansion of mercury. Modified form. Consists of columns surrounded by a glass jacket approx. 460 mm long & 25 mm diameter closed by rubber bungs & fitted with inlet & outlet tubes for steam & cold water respectively. The lower ends of the tubes are bent & are connected horizontally. The upper open ends of the vertical limbs are bent so as to be placed side by side against a silvered glass scale 0-12 cm figured every 2 cm. The whole apparatus is mounted on a wooden stand by means of spring clips. All the glass parts are easily removable.

Used for determining the Viscosity of lubricating and fuel oils in accordance with continental emulsions. It consists of Stainless steel water bath having oil cup with double walled lid. The water bath has a stirring device mounted on stand. A thermometer clip is fixed to the water bath and the oil cup lid has a thermometer socket. The bath is fitted with 500 watts heater. Temperature can be varied using the energy regulator. It is supplied with wooden or ebonite valve to fit the jet. It runs on 220 Volts AC, 50Hz mains. Glass accessories not included.Also available with digital temperature controller and indicator.

This is used for the determination of the sub sieve particle distribution in a soil sample by mechanical analysis. An analysis of this kind expresses quantitatively the proportions by weight of the various sizes of particles present in the soils. It is recommended as a standard procedure to use dispersion agent to avoid flocculation.The apparatus consists of a sliding panel, which moves up and down by means of a screw allowing Anderson pipette fixed to it to be raised or lowered vertically. A laboratory clamp provided on the stand below the pipette holds a sedimentation tube. The depth of immersion is measured by a scale graduated in mm at the side of the sliding panel. Supplied complete with Anderson pipette 10 ml. at the side capacity made from glass, and a sedimentation tube also of glass of 500 ml capacity and 50 Nos Test forms. Accessories & Spares: 1) Sedimentation pipette (Anderson pipette) 25ml. 2) Sedimentation tube 1000ml.3) Sedimentation pipette 10ml.4) Sedimentation tube 500ml.5) Test forms pad of 50.

For determining the supporting strength of soil and soil aggregate mixtures which pass the 2 mm and do not contain more than 10% sand size material. The results obtained by this AASHO & CBR Test. The silent features of this apparatus are:- i) The moulds used in this test are very small hence very smaller samples are required which is a great advantage when a large number of tests have to be carried out with a limited quantity of soil available. Also when large quantities of soil are available, fresh samples can be used for each test. ii) Time required this test is very much less than C.B.R. test and thus more number of tests can be carried out. It consists of a Load frame, mechanical, hand operated, capacity 5000 kg. Cylinder Mould, brass, internal diameter 50 mm x 125 mm high approx. Cylinder Mould, steel, internal diameter 50 mm x 125 mm high approx. Detachable collar approx. 50 mm in height. Base, cylinder, diameter 50mm x 75 mm high. Temporary support (Split collars held on a pair of tongs) to hold the mould on the bottom of the base. Frame of two steel rods, a base plate and a cross member having a semi-circular notch which guides the hammer during compaction. It has a level for forcing the mould to the bottom of the base after moulding. Hammer, 2.6kg. with a 310 mm drop. Hammer, 4.89 kg. with 310 mm drop. Penetration rod 16 mm diameters with arrangement for mounting dial gauge. Guiding device that fits over the mould during testing and maintains the penetration rod in a vertical position. Soaking frame with perforated base and dial gauge holder. Annular weight, 550 gms. with perforated base and spacer. Ejecting plunger. Proving ring, high sensitivity, capacity 1000 kg. with calibration chart and carrying case. Dial gauge graduated 0.0002 mm., range 5 mm.