LaB6 cathode for electron microscopes, kimball lanthanum hexaboride

SKU: M672   |   Availability ⓘ

LaB6 cathode for electron microscopes, kimball lanthanum hexaboride

SKU: M672   |   Availability ⓘ
Tip
EM
Pack Size
AU $1,784.00 Regular price

Taxes and shipping applied at checkout.

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The large gain in brightness and long operating life of Lanthanum Hexaboride cathodes are well known. Kimball Physics' LaB6 cathodes are at least equal in these respects to other cathodes and they also offer a price advantage.

Additionally, Kimball designed their cathodes with a much larger crystal and a one-piece base. The result is greater robustness and much improved life when the operating conditions are less than optimal, such as a vacuum of not quite the desirable 10-8 torr. Lesser vacua result in a contamination layer on the crystal. Overheating the cathode will remove this, but frequently leads to early failure of the Vogel mount design employed by other LaB6 cathode manufacturers. Accidental overheating of the cathode is much better tolerated by Kimball's design.
We recommend Kimball LaB6 cathodes for all electron beam instruments equipped with ion getter or turbo molecular pumps and nitrogen backfill of the column.

Advantages:

  • Greater brightness that is available results in higher resolution, better EDS count rates in high power TEM and much greater uninterrupted operating life.
  • Low power work where high brightness is less important, cathode life can be over 5000 hours. Even with less than ideal vacua, cathode life of more than 1000 hours is expected.
  • Beam current stability is superb, suitable for quantitative microanalyses, provided the instrument has a suitable vacuum system.
  • LaB6 cathodes are less risky to operate; lower cost and long operating life yield savings in cathodes, instrument downtime and operator's time.
  • The angle of the cone makes very little difference to LaB6 performance. All cathodes except for those with very small micro flats are supplied with a 90-degree cone. The top of the cone is machined to provide a micro flat.
  • Micro Flats: Larger flats provide a larger illuminated area and greater longer-term beam stability, as is required for microprobes, but less brightness. Conversely, smaller micro flats result in greater brightness with a smaller illuminated area at given settings compared to larger micro flats. 
  • 20 square micrometer flats are excellent for labs working mostly on sectioned specimens; they are a compromise that offers the LaB6 long cathode life and gives some additional brightness over W filaments. 
  • 40 square micrometer flats are available, but at considerably greater cost. 
  • 60-6 especially suitable for constant very high-resolution work.

Kimball Physics have extensive information on the use, optimisation and vacuum dump recovery of these cathodes. ProSciTech also supplies any other Kimball products, including tantalum disc and Thorium oxide emitters.

To order, indicate make and model of instrument. The size of the normally supplied microflat is 15 square micrometers

E.g.: LaB6 Cathode 90-15 for Cambridge S-410

Technical Data

Updated: 15-06-2024
Code Tip EM Pack Size Availability* Price (ex GST)
M672 90/15 AEI base for Cambridge/Leica/LEO/Zeiss Each 3 weeks AU $1,784.00
M67220 90/20 AEI base for Cambridge/Leica/LEO/Zeiss/Cameca/CamScan Each 2 in stock AU $1,780.00
M674 90/15 Hitachi HU base Each 1 in stock AU $1,926.00
M675 90/15 Hitachi S base Each 3 weeks AU $1,926.00
M676 90/15 JEOL K base Each 3 weeks AU $1,917.00
M67620 90/20 JEOL K base Each 3 weeks AU $1,904.00
M677 90/15 FEI/Philips Each 3 weeks AU $1,915.00
M67720 90/20 FEI/Philips except smaller AEI style on XL30 SEM Each 3 weeks AU $1,907.00
MTP1440-216 Z423E-90/20 ZEISS DSM SEMs or Tescan (19.75mm base) Each 3 weeks AU $1,876.00

* Availability Explanation

X weeks – the estimated lead time, based on the average time taken previously to fill orders from this particular supplier. Lead times are from when we receive your order until when we fill your order. For delivery times, please see shipping information below.

In Stock – Plenty of stock on the shelf, ready to ship.

No ETA – our supplier has advised they cannot provide an accurate ETA. Generally there is some issue with supply, and it may be more than 6 months.

REFUNDS AND RETURNS

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SHIPPING INFORMATION

Shipping and Handling charges are $20 for Australian orders; free for orders over $200. 

In-stock items are generally sent same day. Orders are shipped shipped from Townsville, Queensland. Our couriers pick up from 2:30pm, so please place your order in plenty of time for processing and packing if you would like it sent same day. When items are not in stock, your order may be part-shipped. Items on back-order will be sent as soon as they become available.

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Order Value Shipping and Handling charges
Greater than $200 - (exceptionally heavy or Dangerous Goods excluded). Free
Less than $200 $20
Express shipping $30

Delivery times:

Check your email for tracking details provided at time of shipping for updates of your parcel. We cannot guarantee delivery times, as this is outside of our control. The following are the delivery estimates as given by our couriers. 

Regular shipping
Queensland   1-3 business days 
Sydney   2-5 business days 

Melbourne, Adelaide, Hobart or Canberra 

 3-10 business days 

WA, NT and non-metro areas

 4-10 business days 
Express shipping
Australia wide   1-2 business days

Urgent Orders:

Please request "Express" if you would like us to upgrade your shipment to express delivery. Providing your order fits in a satchel and/or is under 1kg in weight, we will ship your order either DHL, TNT or Express Post. Larger or heavy orders need a quotation for additional freight costs.

Dangerous goods:

See the table on the page for DG shipment costs by road. Please specify when ordering if you require air service (this can be prohibitively expensive). Please request a quotation. We will charge at cost.
 

Shipping to New Zealand Destinations

Orders are now shipped 'receipted delivery'.

Charges:

Order Value Shipping and Handling charges
Greater than $200 - (exceptionally heavy or Dangerous Goods excluded). Free
Less than $200 $26 Minimum Charge

Heavy items (e.g. benchroll or large quantities of microscope slides) may require an additional freight charge - please ask for a quote.

DANGEROUS GOODS shipped to New Zealand: Dangerous goods will be air-freighted and the freight charge billed at cost. Typically, this will be about AUD $600AUD to New Zealand (Up to 2kg).

Delivery times: by air with signature on delivery, depending on courier, delivery can take 3-14 working days. Customs delays are unpredictable and can extend the delivery. Due to COVID19 delivery times have been extended through the couriers and are out of our control.

Shipping to Rest of World Destinations

Contact us for a quote for shipping. 

Delivery times: by air with signature on delivery, depending on courier, delivery can be 7-21 working days. Customs delays are unpredictable and can extend the delivery time. Due to COVID19 delivery times have been extended through the couriers and are out of our control.

DANGEROUS GOODS shipped outside Australia: Not available

GUARANTEE

All products are guaranteed as advertised. Defective products should be returned to us for replacement or credit. Please contact us prior to returning goods. 

We endeavour to provide accurate descriptions, illustrations, prices and stock availability, but errors and omissions are possible. All quotations are E&OE (Errors and Omissions Excepted) 

LIABILITY

All products are intended for laboratory applications only and the user assumes all responsibility involved in use and handling. We accept no liability for loss or damage resulting from the use or abuse of our products. 

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