Mettler Toledo V30 Volumetric VF Titrator w/ Stromboli sampler changer, more...

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Simple and compact
The devices in METTLER TOLEDO's Titration Compact Line are modern, compact titrators for use in a wide variety of application areas. They can be used, for example, in quality control as well as in research and development and satisfy the most demanding of requirements. The titrators in the Titration Compact Line perfectly combine simple, easy-to-understand operation with an extremely high level of precision and outstanding reliability. Thanks to automatic titrant recognition (Plug & Play burettes), the titrator independently identifies which titrant is required without intervention from the operator.
Settings no longer need to be adjusted manually, even when connecting a printer or a Stromboli oven sample changer.
Titration Compact devices can either be controlled by touchscreen or by using LabX PC software. The large color touchscreen allows intuitive control by the user and flexibility in its adjustment options. All functions can be activated directly from the home screen via shortcuts which can be freely created, making everyday use extremely easier. The touchscreen control of the titrator and all adjustable parameters are described in detail in the operating instructions. The separate installation information explains all the necessary steps for installing and commissioning your device. The enclosed "Quick Guide" then guides you through the first titration using a practical example. If you
have any additional questions, METTLER TOLEDO is always available to assist you.

Karl Fischer Water Determination - Measuring Principle
The Karl Fischer procedure is a titration method used for the quantitative determination of water content in liquids and solids. Karl Fischer titration is used in a variety of areas, e.g. for determining the water content of groceries, chemicals, pharmaceuticals, cosmetics and mineral oils.

To determine the water content, first sulfur dioxide and water react with iodine:
2 H2O + SO2 + I2 SO42− + 2 I− + 4 H+
The addition of alcohol (e.g. methanol, ethanol), causes a preliminary reaction to take place in which sulfur dioxide forms an acidic ester, which is then neutralized by the addition of a base (e.g. imidazole, referred to in the following as "RN"):
CH3OH + SO2 + RN (RNH)·(CH3OSO2) In the presence of water, the alkyl sulfite anion is oxidized to alkyl sulfate by the iodine. This process reduces the yellow-brown iodine to colorless iodide:
(RNH)·(CH3OSO2) + I2 + H2O + 2 RN (RNH)·(CH3OSO3) + 2 (RNH)·I
The overall reaction proceeds as follows:
H2O + I2 + SO2 + CH3OH + 3 RN [RNH]SO4CH3 + 2 [RNH]I
The reaction runs until all the water has been consumed and hence free iodine is detected in the titration solution. The end point is determined using bivoltametric indication, i.e. the potential at the polarized double-platinum-pin electrode falls below a certain value (e.g. 100mV).
3.1 Volumetric water content determination
In Karl Fischer (KF) volumetric determination, a titrant containing iodine is gradually added to the water-containing sample until the water is completely displaced and free iodine can be detected in the titration solution. The end point of the titration is recorded using bivoltametric indication. Volumetric Karl Fischer titration is suitable for samples with a water content in the range 100 ppm to 100 %. The optimum recording range is 10mg of water per sample.
For optimal execution of the KF titration, the pH of the solution should be in the range between 4 and 8. Acidic and basic samples should be buffered, ideally with imidazole for acids and salicylic acid for basic samples. The following two conventional reagents are used for titration:
a) The single-component reagent
The titrant consists of iodine, sulfur dioxide and imidazole.The solvent is methanol.
The single-component reagent is simple to use and cost efficient. However, it is not stable for titration.
b) The two-component reagent
The titrant is an iodine solution containing methanol.The solvent for the sample contains sulfur dioxide and imidazole dissolved in methanol.
The two-component system can be used to perform very fast titrations (two to three times quicker than with the single-component reagent). Both components can be easily stored. The reagent is stable for titration, however, the solvent capacity is limited.

In combination with the Mettler compact titrators C30 and V30 the Stromboli sample changer enables up to 14 samples to be titrated in unattended operation.

The samples are automatically transferred into a temperature controlled oven from where the evaporated water is transferred to the titration cell via an applied gas flow.

Plug and Play
Just connect Stromboli to the titrator using the cable supplied and switch on both instruments. You are now ready for your first measurement. The titrator controls Stromboli. It does not have any operating elements and does not require special installation or configuration.

Easy sample handling
The 20ml-sample vials are designed for quick and easy handling: you simply add the sample, cover the vial with an adhesive foil and place a rubber seal on top of the vial. The large volume is ideal for samples with low moisture content or low density. Once the analysis has been completed, you can easily remove the seal and reuse both seal and sample vial. You need no special tools and nothing is wasted.

Gas or air
The oven can be operated with a laboratory gas supply or with an optionally available air pump. The drying unit ensures that the gas entering the instrument is perfectly dry.

A sample changer including a drying oven:
Temperature range from 30-300°C. The titration is started only when the set oven temperature is reached. The oven temperature is documented on the printout.

Clear display
Stromboli displays the actual and the preset oven temperature in large blue illuminated numerals on the upper side of the instrument.

Blank and drift determinations:
Drift determination to compensate moisture introduced by the carrier gas. Blank determination to compensate the moisture from the vial and the carrier gas. The values can be entered manually, automatically determined before a series or taken from the last measurement. One or more positions for blank and drift determinations can be freely defined in the titrator method.

Condition

Excellent functional condition.  Recently from a working lab environment.

Includes

• Mettler Toledo V30 Volumetric VF Titrator
  
• Mettler DM 143-SC Double pin platinum electrode with integrated glass sleeve
• Mettler DV1005 5ml burette installed
• Mettler DV1005 5ml burette (extra new spare)
• Mettler Stromboli sample changer oven
• Drying unit 
• Solvent manager
• Misc tubing/fittings
• Calibration certificates (2018)
• Power supply

BBR3

Delivery

Our team will custom package this instrument to ensure safe delivery.  

Warranty

30 Day warranty. We pledge to offer the best service and warranty to all of our customers!  We are extending a 30 Day warranty on this item. This is our way of saying thank you for allowing us to serve you.

Certification

This is a genuine product from this manufacturer.

Disclaimer

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Regardless of the origin of the equipment, documentation provided or identification appearing upon the equipment, the equipment described and offered here is in no way certified for, recommended for, or offered for any specific use. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment. The purchaser, by bidding on this equipment, indicates their acknowledgment of, and agreement to the terms of this disclaimer. it is the purchaser's responsibility to have the item inspected and certified by a qualified professional before use!