Quick answer. Before choosing any bitumen instrument, settle which extraction solvent you are permitted to use. Binder content is found by dissolving bitumen out of the mix, and the solvents traditionally specified for it are chlorinated - toxic, restricted or banned for general use in many countries, and subject to strict disposal rules where they are allowed. Ask which solvent the method supplied with the binder extractors requires, whether it is lawful where you are, and how used solvent and recovered aggregate are disposed of; an extraction unit also needs a fume cupboard. Then buy by stage: grading the binder, finding binder content, or testing the mix.
About thirty items, coded BT-0001 onwards, for bitumen and bituminous mixture testing. Grading the binder: standard and semi-automatic penetrometers, ring and ball softening point apparatus in manual and electrically heated forms, a Saybolt viscometer and a standard tar viscometer. Binder content and recovery: a hand-operated binder extractor, motorised centrifuge extractors and a reflux extractor. Water content: a Dean and Stark apparatus. Mix design and performance: a mixer with a heating jacket, manual compaction equipment and Marshall stability test apparatus in analogue and digital forms. Field and pavement work: a pavement core drilling machine, a three metre straight edge and a stripping value apparatus.
Two notes on our catalogue data: two records carry a letter suffix on the code rather than a new number, which is a format not used elsewhere in the catalogue and may not sort or search as you expect; and the Saybolt viscometer has its name split into two words. Quote the code and the full product name together and have both confirmed on the proforma invoice.
Every other page in this catalogue puts safety after the technical content. This one does not, because bitumen testing involves two hazards that are more serious than anything in the instruments themselves, and a laboratory that is not set up for them should not take delivery.
Hot bitumen causes severe burns, and it sticks. It is handled at well over a hundred degrees, it is viscous, and on contact with skin it adheres and keeps transferring heat. The rule that matters: adhered bitumen is never pulled or wiped off - the skin comes with it. It is cooled immediately with copious cool water and left in place, and the casualty goes for medical attention with the bitumen still on. That instruction should be on the wall of the laboratory before any hot work starts, along with long gauntlets, a face shield, an apron and closed footwear.
Three further hot-work rules. Never heat bitumen with a naked flame - use a thermostatically controlled oven or pot, because bitumen heated past its flash point can ignite and an open flame under a pot is how that happens. Keep water out of hot bitumen: a wet container or a damp sample causes violent foaming and can throw hot material out of the vessel. And never heat a sealed container of any kind.
The extraction solvents need settling before you order. Binder content is determined by dissolving the bitumen out of the mix, and the solvents traditionally specified for it are chlorinated - effective, and also toxic, with several of them now restricted or banned for general use in many countries and subject to strict handling and disposal rules where they are permitted. So ask us, explicitly: which solvent does the method supplied with this apparatus require, is it lawful to import and use where you are, and what is the disposal route for the used solvent and the recovered aggregate? An extraction unit also needs a fume cupboard rather than a bench. We would rather answer that at the enquiry stage than ship equipment you cannot lawfully run.
Bitumen work runs in three stages, and the listing divides the same way. Knowing which stage your laboratory is in tells you which third to buy.
| Stage | What is measured | What to settle |
|---|---|---|
| 1. Grade the binder | Penetration, softening point and viscosity - the three numbers that identify a bitumen grade and tell you how it will behave hot and cold | Bath temperature control, heating rate, and the condition of needles and balls. These are small instruments whose results depend almost entirely on temperature discipline |
| 2. Find the binder content | How much bitumen is in a mix, and recovery of the binder for re-testing after it has been in service | The solvent question above, a fume cupboard, and the extraction method your standard names |
| 3. Test the mix | Marshall stability and flow, stripping value, and core samples from the laid pavement | Temperature control at every step - mixing, compaction, conditioning and testing - because a bituminous mix is a different material at every temperature |
Penetration is the depth a standard needle sinks into the sample under a standard load for a standard time at a standard temperature - and every one of those words is a specification. The bath temperature is the most sensitive of them: bitumen softens quickly as it warms, so a bath drifting by a degree moves the result. Ask what bath and thermostat are supplied and their stability. And ask about the needles: a needle is a consumable, and a blunted or burred needle penetrates less and reports the bitumen as harder than it is. Ask what spares cost and set a replacement rule.
Softening point by the ring and ball method heats a sample in a bath until a steel ball falls through it. The result depends on the rate of heating, which the standard sets - and that is exactly the difference between the two records in this listing: the manual version relies on the operator controlling a heater, the electrically heated version controls the rate itself. For a laboratory reporting results to customers, buy the controlled version; for teaching, the manual one makes the point about heating rate rather well.
Viscosity by the Saybolt and standard tar viscometers is an efflux time in seconds rather than a value in modern units - the same point set out on our oil and petroleum testing page. If your specification asks for kinematic or dynamic viscosity in SI units, these instruments do not produce it directly; tell us and we will quote a capillary bath or a rotational viscometer instead.
The Marshall method is the mix design procedure most road specifications are written around, and it is a sequence rather than a measurement: a mix is prepared at a specified temperature, compacted with a specified hammer and number of blows per face, conditioned in a water bath at a specified temperature for a specified time, then loaded in a breaking head at a specified rate while load and flow are recorded.
So a Marshall stability machine on its own cannot run the method. Ask what is included and what is extra: the compaction hammer and pedestal, moulds and collars, the extruder, the water bath with its thermostat, the breaking head, the flow meter or displacement transducer, and the load measurement. Ask also how load and flow are recorded, because the digital version in this listing exists to capture both as a curve rather than leaving an operator to read a dial and a gauge at the same moment - which is genuinely difficult and is where most Marshall scatter comes from.
And the temperature discipline, which is the whole method: mixing temperature, compaction temperature, bath temperature and the time in the bath are all specified, and a result taken outside them is not a Marshall result. Ask us for the bath capacity in specimens, because the bath is usually the bottleneck in a busy laboratory.
The core drilling machine takes samples from a laid pavement for thickness, density and binder content. Ask the core diameters it takes, the power supply - petrol or electric, which decides whether it can be used away from a supply - the water supply and collection arrangement, since diamond coring needs water and produces slurry, and the mass, because it has to be carried to site. Ask also about operator protection: this is a rotating cutter in a wet environment, so earth-leakage protection on an electric machine is not optional.
The stripping value apparatus answers a different and very practical question: whether the binder will stay stuck to the aggregate in the presence of water, which is what causes a surface to ravel. For a laboratory working with local aggregates of unknown affinity it is one of the most useful instruments on this page, and it is cheap. Ask what the method is and what the test conditions are.
The standard and version each item is built to; bath capacities, thermostat stability and whether temperature is recorded; heating rate control on the softening point apparatus; needle, ball and ring specifications and spare prices; for extraction, the solvent required, its importability, the fume extraction needed and the disposal route; for Marshall, the complete list of what is included and what is extra, with bath capacity in specimens and how load and flow are recorded; for the core drill, core sizes, power source, water and slurry handling, mass and electrical protection; hot-work provisions - controlled oven or pot, gauntlets, face shield, apron; consumables with prices; services at the position; nominal voltage, frequency and plug pattern; and the warranty, commissioning and local service position. For any certification stated here, contact us for the latest copies of the relevant certificates before you tender on it.
Related ranges: concrete testing machines, cement testing equipments and soil testing machines for the rest of a highway materials laboratory, civil engineering lab equipments for soil strength and surveying, and oil and petroleum testing for flash point and viscosity fundamentals. The full set is listed under testing machines. For a quotation, tell us the destination country, the standards your customers name, and - before anything else - which extraction solvent you are permitted to use.
Ask us explicitly before ordering. The hand-operated, motorised centrifuge and reflux extractors all dissolve the bitumen out of the mix, and the solvents traditionally specified for that are chlorinated - effective, but toxic, with several now restricted or banned for general use in many countries and subject to strict handling and disposal rules where permitted. Ask which solvent the supplied method requires, whether it is lawful to import and use where you are, and what the disposal route is for used solvent and recovered aggregate. Plan a fume cupboard rather than a bench. We would rather answer that at the enquiry stage.
Hot bitumen is handled at well over a hundred degrees, sticks to skin and keeps transferring heat. Adhered bitumen is never pulled or wiped off - the skin comes with it; cool it immediately with copious cool water, leave it in place and send the casualty for medical attention. Post that rule on the wall before hot work starts, with long gauntlets, a face shield, an apron and closed footwear. Never heat bitumen with a naked flame - use a thermostatically controlled oven or pot. Keep water out of hot bitumen, because a damp sample foams violently. Never heat a sealed container.
Penetration is the depth a standard needle sinks under a standard load for a standard time at a standard temperature, and every one of those words is a specification. Bath temperature is the most sensitive: bitumen softens quickly as it warms, so a bath drifting by a degree moves the result. Ask what bath and thermostat come with the standard and semi-automatic penetrometers, and their stability. Treat the needle as a consumable: a blunted or burred needle penetrates less and reports the bitumen as harder than it is, so ask about spare needles and set a replacement rule.
The softening point result depends on the rate of heating, which the standard sets, and that is exactly the difference between the two records. The manual version relies on the operator controlling a heater; the electrically heated version controls the rate itself. For a laboratory reporting results to customers, buy the controlled version; for teaching, the manual one makes the point about heating rate rather well. Note also that the Saybolt and standard tar viscometers give efflux seconds, not viscosity in SI units - ask for a capillary bath or rotational viscometer if your specification needs those.
No - the machine is the smaller half. The method is a sequence: mixing at a specified temperature, compaction with a specified hammer and number of blows per face, conditioning in a water bath at a specified temperature and time, then loading in a breaking head at a specified rate while load and flow are recorded. Ask what is included and what is extra: hammer and pedestal, moulds and collars, extruder, water bath and thermostat, breaking head, flow and load measurement. The digital version records load and flow as a curve, which removes the commonest source of scatter. Ask the bath capacity in specimens.
For the pavement core drilling machine, ask the core diameters, whether it is petrol or electric - which decides whether it works away from a supply - the water supply and slurry collection, since diamond coring needs water, and the mass, because it is carried to site. A rotating cutter in a wet environment makes earth-leakage protection on an electric machine essential. The stripping value apparatus shows whether binder stays stuck to aggregate in the presence of water, which is what makes a surface ravel; for local aggregates of unknown affinity it is one of the most useful instruments here. Ask the method and test conditions.
Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.
Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.
Specifications - standard and version, bath capacity and thermostat stability, heating rate control, needle, ball and ring specifications, extraction solvent and fume extraction, Marshall accessories and core drill details - are confirmed in writing on the quotation. For calibration certificates, standards or approvals, contact us for the latest copies of the relevant certificates. No price is quoted on this page. Listing notes: two records carry a letter suffix on the code rather than a new number, a format not used elsewhere in the catalogue that may not sort or search as expected; and the Saybolt viscometer has its name split into two words. Quote the code and the full product name together.
Centrifuge Extractor (Motorised) for Bitumen Testing - Centrifuge Extractor, Electrical Operation, Capacity 1500g, with a Dimmer stat for speed control from 2,400 to 3,600 rpm. Suitable for operation on 230 V, 50 Hz, Single Phase, A.C. supply..
Centrifuge Extractor (Motorized) for Bitumen Testing - Used for the assurance of bitumen rate in bituminous blends. It comprises of a removable, accuracy machined aluminum rotor bowl (extra 1500 or 3000 g limit), housed in a round and hollow aluminum box. The different control board joins an electronic card fitted with AC drive that naturally drives the bowl speed revolution incline from 0 to 3600 R.P.M. as asked for by Standards, with programmed quick stop bowl turn toward the finish of the test. Provided finish with a speed controller and advanced show checking the recurrence. Power supply: 230 V A.C. Single Phase.
Say bolt Viscometer, Electrically Heated, ASTM D88, D244, AASHTO T72 for Bitumen Testing -for the empirical measurement of Say bolt Viscosity of oil-based commodities at determined temperatures between 70o F and 210o F. This is additionally utilized for deciding the Saybolt Furol Viscosity of bituminous materials at temperatures of 250, 275, 300, 350, 400 and 450 F. It contains one each of barrel-shaped Oil container, Universal Tip, Furol Tip, Bath Fitted with inundation Heater mounted on a stand. Dimmer detail for temperature control, Stirrer with a shield. Finish with protected handle and thermometer bolster accepting carafe, withdrawal tube, channel pipe, thermometer bolster for a glass and round soul level. Reasonable for operation on 230 V 50 Hz, Single Phase, A.C. Discretionary Extras : - Brass Oil Tube - Receiving Flask, 60ml - Universal and Furol Tip (Set of 2) - Filter Funnel - Thermometer Support - Heating Coil - Thermometer Type 18 F Range : 66o F to 80o F - Thermometer Type 19 F Range: 94o F to 80o F - Thermometer Type 19 F Range: 120o F to 148o F - Thermometer Type 20F Range: 134o F to 148o F - Thermometer Type 21 F Range : 174o F to 188o F - Thermometer Type 22 F Range : 204o F to 218o F - Thermometer Type 77F Range: 245o F to 265o F - Thermometer Type 77F Range: 295o F to 315o F - Thermometer Type 78 F Range: 345o F to 365o F - Thermometer Type 80F Range : 395o F to 415o F - Thermometer Type 81F Range: 445o F to 465o F.
Electrical Heating with Immersion Heating Elements and Dimmer stat for controlling the temperature. Suitable for operation on 230 V, 50Hz, Single Phase , A.C. supply Complete with 10mm cup and Ball Valve, 10mm.
Manual Compaction for Bitumen Testing - Consists of Mould body, base plate and combined filling / extraction collar..
Mixer with Heating Jacket for Bitumen Testing - A 6-liter Mixer Used in conjunction with an Iso Mantle, is appropriate for blending tests of black-top. Seat mounting Mixer, 6 liter ostensible limit. Provided with bowl, mixer and whisk. Mechanized with two speed worked on 230 V A.C., Single Phase. ISO MANTLE ELECTRIC HEATER - For utilization of Bench Mounting blender. For 230 V A.C. , 50Hz, Single Phase.
Marshall Stability Test Apparatus for Bitumen Testing - It comprises of body lodging, an equipped screw jack and engine drive instrument reasonable for operation on 230 V, 50Hz, Single Phase, A.C. supply. Vigorous Construction 50KN limit, Rate of travel 50.8mm/min, Safety cut-off switch. - MARSHAL LOAD FRAME 1No. - Breaking Head Stability Mold, with a dial gage ( having 25mm travel and 0.01mm minimum check), for stream estimation 1 No. - Compaction Mold, Steel round and hollow 3 Nos. - Base Plate 3 Nos. - Extension Collar 3 Nos. - Compaction Pedestal, Manual Operation, Comprising a steel plate topped on a wooden post. A Mold Clamp is fitted to the highest point of the plate. 1Nos. - Compaction Hammer, for use with compaction Pedestal and Mold, weight 4.5 kg with a free of 457mm. 2 Nos. - Load Transfer Bar 1 No
Digital Marshall Stability Test Apparatus for Bitumen Testing - This versatile digital loading frame features a microprocessor controlled drive system with stepper motor enabling the operator to easily set any test speed by digital switches. The machine is fitted with a RS 232 C port so it can be remotely controlled by a PC. The upper and lower cutoff points of platen travel are set by utilization of programmed wellbeing set pattern switches. All heap rings, dial gages, cells, and so on must be requested independently. Determination : - Load limit : 50kN (5000 kgf) - Platen Speeds : Selectable Speed run 0.01 mm to 62mm/min - Accuracy of platen speed : 1% - Max. vertical sunshine : 0-850 mm - Platen dia : 180mm - Distance between segments : 380mm - RS 232 Port for association with PC. L.V.D.T. can be provided rather than dial gage fitted with Breaking Head Assembly..
The Pavement Core Drilling Machine for Bitumen Testing - Diesel motor fueled street building drill has been composed particularly to drill test centers from or openings in, Roads, Airport Runways, Bridges and so on. The Machine includes two vertical help sections, which convey the Drill head/Engine get together with the assistance of screwed axle. The 5 HP diesel motor with pulley component works with least vibrations. The twofold exactness bit progresses with screwed axle, which gives a consistent, precise penetrate weight, least center chipping and long piece life. The entire get together is provided on an unbending metal base with leveling office and is reasonable for vertically down coring applications as it were. Bit Diameter : Varying from 25mm to 150mm Maximum profundity of center : 700mm Drill Speed : 475 and 800 R.P.M. Guide Shafts : 50mm dia Screwed Spindle : 20mm dia Water Tap : 12mm Drill Wrenches : Included Water Tank : Optional.
Programmed Compactor for Bitumen Testing - Automatic Compactor for Bituminous Mixes: Rugged development to withstand diligent work, Fully programmed and simple to work Uniform compaction, Automatic Preset Blow Counter Specification : The Automatic Compactor disposes of the relentless procedure of manual compaction and an even level of compaction is accomplished. The determined component lifts the heaviness of 4.5kg and drops it through a right stature of 457 mm. The rammer foot is removable, which encourages preheating. A compaction platform with example holder is settled to the base. An Automatic Blow counter empowers the quantity of hits to be available before each test and naturally stops the machine on culmination. Appropriate for operation on 230 V, 50 Hz, Single Phase, A.C. supply..
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