Do you need a benchtop rack to store sample tubes and vials? Grab a bargain today as all of our manufactured 2 and 3 tier tube racks are now half price! These racks are available in red, blue and green and will take tube sizes from 1.5ml up to 50ml falcon sized. These racks can be used in a [...]
A hydrometer is an instrument that is made of glass and consists of a cylindrical stem and a bulb weighted with mercury or lead to make it float upright. It is used to measure the Specific Gravity (SG) of liquids. In other words the ratio of density of the liquid to the density of water.The SG of water is [...]
Do you need a benchtop rack to store sample tubes and vials?
Grab a bargain today as all of our manufactured 2 and 3 tier tube racks are now half price!
These racks are available in red, blue and green and will take tube sizes from 1.5ml up to 50ml falcon sized.
These racks can be used in a water-bath, shaker, fridge, freezer or incubator depending on your application.
Click 2TIER or 3TIER to view the products on our website and order before all the stock is gone
A hydrometer is an instrument that is made of glass and consists of a cylindrical stem and a bulb weighted with mercury or lead to make it float upright.
It is used to measure the Specific Gravity (SG) of liquids. In other words the ratio of density of the liquid to the density of water.The SG of water is 1.000 at 4°C.
For example the lower the density of a substance the farther the hydrometer will sink, such as alcohol or gasoline.
A brineometer is very similar to the hydrometer except its used for gauging the strength of a salt solution. The stem is separated into increments of 1.0 to 100% saturation levels.
For example the brinometer is commonly used in the food industry for brining fish. Solid salt is added to fish tanks to give fish an attractive gloss. Sodium Chloride is poured into fish tanks and the brine strength has to be regularly tested and maintained at 70-80% saturation levels
.
To find out more, click on HYDROMETER to see Camlab’s full range depending on your application. All call 01954 233100 to speak to a member of our team.
Can I measure Fluoride on my pH meter?
Fluoride can be measured on an Ion Selective Electrode (ISE). The ion selective electrode generates a signal which is the same as that generated in a pH measurement. In simple terms if the pH meter can measure mV and well as pH then the meter can be used to make an ISE measurement.
To do this with a pH meter the user will have to generate a range of standards (for fluoride this is normally 0.1, 1 and 10ppm fluoride), measure these standards and record the data. The data is then plotted on a graph and the user can measure an unknown sample and look up the value
from the graph.
More advanced pH meters or Ion meters can measure Ions without the external calibration and will calibrate on the same standards and give a you a direct reading in fluoride.
For measurement of a large number of samples there are automated fluoride analysis systems which can reduce analysis and preparation time significantly.
Contact us for more details on Ion analysis using the form below.
Techne Gelation timer
A Techne digital Gelation Timer provides accurate, reproducible results for manufacturers testing how long a sample or product needs to set from a liquid into a solid gel during polymerisation.
Designed to discriminate between the viscosity of a liquid and the elasticity of a gel, the Techne digital Gelation Timer is a simple device which has been shown to determine the gelation point of a wide range of compounds with high accuracy and reproducibililty.*
With push-button operation, a bright LED display and the facility for mounting on a retort stand, the Gelation Timer could not be easier to use. When gelation occurs the digital timer stops automatically, indicated with an audible bleep and light. Two models are available: the 1rpm GT-5 shows times in one-minute increments up to 9999 minutes, while the 10rpm GT-6 version displays to the nearest tenth of a minute, making it ideal for materials with shorter gelation times.
‘”Gel time” is an important parameter in the manufacture of many compounds – whether fast setting or curing is required to speed up production; or slow gelation, and therefore a longer handling time, is an advantage. The Techne digital Gelation Timer is a valuable tool in diverse quality control applications, such as in the food industry, where gelatin and other setting or thickening agents are used as ingredients; for pharmaceuticals which require tablet coatings containing gelatin; for development of adhesives and polymers, including flooring compounds; and in the manufacture of agarose and polyacrylamide gels for life science analytical techniques.
Techne digital Gelation Timer have led the market for almost sixty years and several British Standards for this methodology have been written with reference to Techne equipment. Available accessories include three sizes of stainless steel plunger (removable for easy cleaning), packs of disposable plungers, and sample cups. All Techne Gelation Timers are covered by a 3-year warranty and receive a calibration certificate for traceability.
The full range of Techne products are available from Camlab
biomasher
Homogenize and strain your sample for quick processing.
The BioMasher™ is an essential tool for any researcher working with nucleic acid extraction. Its proprietary design consists of a homogenizer for grinding your sample, a column for straining, and a collection tube to contain the final homogenate. This system can be used on a wide variety of tissues, and is an ideal preparatory step for amplification and other downstream applications.
The BioMasher™ Sample Preparation Device was used to prepare bovine brain cell lysates prior to testing for BSE (Bovine Spongiform Encephalitis). We have found that the BioMasher™ is a versatile tool well suited for genomic and proteomic research.
The BioMasher is comprised of three single-use components: a micro homogenizer, a porous filter column insert, and a microcentrifuge tube. Using the BioMasher is very simple. First, ensure that the filter column insert is properly seated in the microcentrifuge tube. Next, add your sample to the filter column. We commonly use plant leaf (~50 mg to ~200 mg), seeds (usually only a few seeds are necessary, but more may be required if they are very small seeds), or insects (typically one insect such as a mosquito or tick). A small amount of lysis buffer, typically 50 µL (RNA or DNA lysis buffer or a protein extraction buffer) is added to the sample. The micro homogenizer is then inserted into the filter column and with steady but firm pressure, the homogenizer is rotated, causing the blades on the end of the homogenizer to tear open the tissue.
While we have found that the BioMasher can be used by hand to yield sufficient nucleic acid for PCR analysis, yields are dramatically increased when the homogenizer is attached to the end of a lightweight handheld power drill. For this approach, simply attach the handle end of the homogenizer into a drill’s chuck and tighten. Homogenize the sample applying firm pressure (low speed is sufficient). Remove the homogenizer from the filter column and detach it from the drill. Add an additional 150 µL of lysis to the sample in the filter column, then gently re-insert the homogenizer. Centrifuge the entire assembly at a maximum of 10,000 rpm. After centrifugation, remove and dispose of the micro homogenizer and filter column insert. The cell lysate collected in the microcentrifuge tube can now be further purified or used in downstream analysis.
Camlab offer a full range of homogenisers from manual to mechanical homogenizer. For a sample pack of Biomashers click Biomashers.
Use Voucher Code: HALLOWEEN
LCK310 chlorine
With the launch of the new Hach 3900 spectrophotometer, the packaging of the LCK 310 cuvette test has changed. From now on you will find 24 instead of 38 cuvette tests in one package. The Good news is: The price for a single test stays the same. You can use the new cuvette tests with the predecessor spectrophotometer products, Hach Dr2800, Hach DR3800.
The reaction time for measurement of chlorine has been reduced from 2 minutes to 1 minute. You find further information inside the package.
For all you Hach water testing reagents in UK stock contact Camlab, or fill out the form below for us to contact you.
The exhibition will be held in the Core Technology Facility (CTF), which is adjacent to the Bioscience Incubator building and is linked to the AV Hill and the Michael Smith buildings in Grafton Street, Manchester.
This event will offer the opportunity to meet with suppliers of a wide range of products and services to the bioscience sector and see first-hand some of the latest products in the market place.
power station
Boilers and cooling towers share two major water related problems: deposits and corrosion. As steam is generated by a boiler or water evaporating from a cooling tower, dissolved minerals are left behind, increasing the concentration of these minerals. Additional minerals are introduced via the water added to makeup the water lost to steam/evaporation. Eventually, the minerals reach a level (or cycle) of concentration that will cause either loss of efficiency due to scale or damage from corrosion. This level can be determined by the Ryznar or Langlier indices and correlated to a conductivity or TDS range. Most people recognize problems associated with corrosion. Effects from scale deposits, however, are equally important. For example, as little as 1/8″ of scale can reduce the efficiency of a boiler by 18% or a cooling tower heat exchanger by 40%!
A variety of water treatment methods are employed in an effort to control these problems. Even with water treatment, it is still necessary to regularly blow down or bleed off part of the concentrated water and make up with lower salinity water to reduce the overall mineral concentration.
To conserve water and treatment chemicals, it is desirable to allow the dissolved minerals to reach a maximum cycle of concentration while still avoiding problems. Because feed water/make-up waters vary in the types and amounts of minerals present, the allowable cycles of concentration will vary. As a result, regular testing of boiler and cooling waters is essential to optimize water treatment programs and blow down schedules. Tests commonly performed include conductivity or TDS, pH and ORP. Myron L Company instrumentation provides you with a simple, fast, and accurate means of testing these parameters.
Many cooling towers and boilers have inline controllers used to release water from the tower or boiler and feed chemical(s) into the system. The controllers must be calibrated regularly to ensure fouling or drift of the sensor has not occurred. Our portable instruments in conjunction with NIST traceable standard solutions provide rapid verification of the accuracy of inline controllers. This method reduces manpower and the likelihood of disturbing or damaging sensors.
Conductivity
Conductivity is the measurement of a solution’s ability to transmit an electrical current. It is usually expressed in microsiemens/cm (micromhos/cm). Pure water is actually a poor electrical conductor (18,200,000 ohms/cm of resistance). It is the amount of ionized substances (or salts) dissolved in water which determines the conductivity. Because the vast majority of the dissolved minerals in water are these conductive inorganic impurities, conductivity measurement is an excellent indicator of mineral concentration.
The Myron L Instruments were developed for just this purpose. Models are available which display conductivity and/or ppm of TDS. For detailed information regarding the relationship between conductivity and TDS, please see the Myron L Application Bulletin: Standard Solutions and Buffers.
pH
pH, the measurement of acidity or basicity, is one of the most important factors affecting scale formation or corrosion in a boiler or cooling system. The types of impurities comprising the mineral concentration behave differently at various pHs. Low pH waters have a tendency to cause corrosion, while high pH waters may cause scale formation.
Boiler water
Boiler water requirements can range from very pure to more than 6500 microsiemens, depending on size, pressure, application, and feed water. Once the maximum cycles of concentration has been established, a conductivity instrument can conveniently help you to determine if the blow down schedule is adequate. Samples should be cooled to at least 160°F/71°C to ensure accurate temperature compensated readings.
Boiler condensate
Boiler condensate samples are often tested to determine if there area any carry over of boiler water solids or contaminants entering from outside the system. Condensate is relatively pure water, and values of 2-100 microsiemens are common. Because of these low values, a multiple-range instrument is recommended to increase the resolution and accuracy of the reading. Monitoring the pH of condensate is also important since condensate is very corrosive at low pHs. Treatment additives are often added to elevate the pH to minimize corrosion in condensate lines.
Cooling tower water
Cooling tower water has become more challenging since the reduced use of acid and the elimination of chromate. Monitoring conductivity and pH has become imperative to maintain a proper treatment program. Although many systems have controls on these parameters, the possibility of a system upset is always present. Even slight upsets can cause rapid scaling of heat exchangers.
Biological Growth
Biological growth is another extremely important facet to proper cooling water management. Microbes can cause corrosion, fouling, and disease. Oxidizing biocides (chlorine, chlorine dioxide, ozone and bromine) have been employed to keep bacteria under control. Monitoring of the ORP (Oxidation Reduction Potential)/redox is very useful in its ability to correlate millivolt readings to sanitization strength of the water. The Myron ULTRAMETER II™ 6P includes this parameter for quick on-site determinations.
Contact Camlab for a full range of test strips, handheld meters and online instrumentation for all your boiler applications.
Jenway have recently updated their dissolved oxygen probes. To ensure you get the correct probe please read the following:
Jenway have an extensive range of dissolved oxygen probes suitable for portable or bench dissolved oxygen meters. The probes for the dissolved oxygen meters have all been updated in order to unify the range.
The dissolved oxygen probes have been redesigned so that they are all the same diameter. As a result of this redesign the new probes have a narrower diameter than the old probes.
The new probes are easily identified with a B after the probe part number on the probe or meter packaging.
When any dissolved oxygen probe is purchased either with a dissolved oxygen meter or by itself it is supplied with one membrane fitted and two spare membranes.
To compliment the new probe design the dissolved oxygen membranes have also been redesigned. The photo below shows the difference between the old and new membranes.
Jenway Dissolved Oxygen Probes
OLD OLD NEW
541 551 522 019 522 019B
Internal Diameter: 15mm Internal Diameter: 10mm Internal Diameter: 8mm
Height: 24mm Height: 25mm Height: 19mm
The old membranes 541 551 and 522 019 are supplied in containers and the new membranes are not supplied in containers. The new membranes will not fit on old probes and old membranes will not fit on new probes.
Jenway will continue to support existing customers by stocking membranes for the old probes. For details on which part number to order refer to the relevant dissolved oxygen meter and probe section below:
Dissolved oxygen meter 970
Old probe – part number 970 231
Old probe – part number 970 231
Probe length: 153mm
External diameter: 12mm
For this probe order the following accessories:
| Probe Number | Membrane kit | B.O.D Kit |
| 970 231 | 522 019 | 552 050 |
New probe – part number 970 231B
New probe – part number 970 231B
Probe length: 190mm
External diameter: 12mm
For this probe order the following accessories:
| Probe Number | Membrane kit | B.O.D Kit |
| 970 231B | 522 019B | 552 050B |
Dissolved oxygen meter 9500
Old probe – part number 522 023
Old probe – part number 522 023
Probe length: 153mm
External diameter: 12mm
For this probe order the following accessories:
| Probe Number | Membrane kit | B.O.D Kit |
| 522023 | 522 019 | 552 050 |
New probe – part number 522 023B
New probe – part number 522 023B
Probe length: 190mm
External diameter: 12mm
For this probe order the following accessories:
| Probe Number | Membrane kit | B.O.D Kit |
| 522 023B | 522 019B | 552 050B |
Dissolved oxygen meter 9150 and 9200
Old probe – part number 541 520
Old probe – part number 541 520
Probe length: 160mm
External diameter: 20mm
For this probe order the following accessories:
| Probe Number | Membrane kit | B.O.D Kit |
| 541 520 | 541 551 | N/A |
New probe – part number 541 520B
New probe – part number 541 520B
Probe length: 190mm
External diameter: 12mm
For this probe order the following accessories:
| Probe Number | Membrane kit | B.O.D Kit |
| 541 520B | 522 019B | 552 050B |
Availability
The table below shows the dates which the old probes were discontinued and replaced with the new probes:
| Unit | Old Probenumber | New Probenumber | Date replaced |
| 970 | 970 231 | 970 231B | September 2009 |
| 9500 | 522 023 | 522 023B | November 2009 |
| 9150 | 541 520 | 541 520B | December 2009 |
| 9200 | 541 520 | 541 520B | December 2009 |
Pricing
The list price for the new probes and new membrane kits is the same as the old probes and old membrane kits.
Contact camlab below for more information