I happened across this on Ebay, turns out to be perfect for working on tube and high voltage stuff. These supplies are used in a medical testing procedure. Apparently putting current through a gel causes certain organisms to migrate toward the electrode.
The neat part is the supplies are constant voltage, constant current, or constant wattage. The norm seems to be 0-3000 volts with a max output of 300 watts. There are lots of them on Ebay for under 100 dollars.
I use mine for checking/reforming capacitors also.
The neat part is the supplies are constant voltage, constant current, or constant wattage. The norm seems to be 0-3000 volts with a max output of 300 watts. There are lots of them on Ebay for under 100 dollars.
I use mine for checking/reforming capacitors also.
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I bought an electrophoresis supply made by Isco (model 494) on eBay a few weeks ago for $40 plus $30 for UPS ground from Cal. 0 - 600V @300mA, 0 - 2KV @ 90mA. Constant current, constant voltage or constant power operation.. Works fine, planning on using for GM70/211/845 amplifier project development.
The seller doesn't have any on offer at the moment, but I would just do a search on eBay to see what turns up. I'd search on IBI, ISCO, and electrophoresis.
The seller doesn't have any on offer at the moment, but I would just do a search on eBay to see what turns up. I'd search on IBI, ISCO, and electrophoresis.
With the USPS dropping ground postage and no courier company doing a replacement, these have just become the preserve of North America only, unfortunately. Ebay for the rest of the world doesn't really have them.
Is anyone aware of a company doing ground shipping at rates comparable to the old USPS ones?
Is anyone aware of a company doing ground shipping at rates comparable to the old USPS ones?
mach1 said:
Yeah, when I was still in business (years ago) I did a lot of international trade and I can't remember one instance of shipping anything by USPS surface mail.
Shipping heavy stuff to Canada and elsewhere I generally used one of the big three. UPS in particular seems very good at handling customs issues.. JAL is good to and from Japan as well, but expensive..
kevinkr said:
That's what I've observed too; in the business world. For my hobby stuff I don't mind waiting 6 weeks or so. I've had quite a bit of stuff shipped surface, as the savings were quite significant if it's your money. Now that surface shipping is gone I've given up on the US for my larger hobby things. (Photographic and other equipment as well as electronics.)
All the equipment I use for work is, and always was air freighted, but that's not the market I'm talking about.
Ooooh, a thread gone OT to rant about shipping 
USPS air will always be the cheaper option. I had a 20Lb dual trace boatanchor of a scope shipped to me from Texas and that came to $39. Even under the old surface system, I would have saved maybe $5 at that weight.
The FedEx option, incl. thir BS "brokerage" would have hit $120+
My last experience with international couriers has ended up in court, twice!
Often USPS will beat the courier for delivery and I've never had a problem with them. Same with Canada Post. Sure, international is expensive (but they did only go up 4 to 6% this year), but when a parcel DID go missing the odd time, the insurance claim process was painless and I had the money in two weeks.
American sellers have to, have to, have to realize that their stupid couriers are only welcome in their own country. They should also realize that WE are paying the shipping, so stop whining about costs, blah, blah. Shipping to the UK or AU will not kill you, unless you ARE on the DHS watchlist.
As for shipping from China, have them send it "Air, Land and Sea" (that's what China Post calls it). It's really cheap and my parcels from Shenzhen arrive in 4-6 days!!
As for small businesses, it really hurts us. Large and mid sized businesses have contracts with shippers. Shippers won't give us little guys the time of day and treat us as a nuisance.
/end rant
USPS air will always be the cheaper option. I had a 20Lb dual trace boatanchor of a scope shipped to me from Texas and that came to $39. Even under the old surface system, I would have saved maybe $5 at that weight.
The FedEx option, incl. thir BS "brokerage" would have hit $120+
My last experience with international couriers has ended up in court, twice!
Often USPS will beat the courier for delivery and I've never had a problem with them. Same with Canada Post. Sure, international is expensive (but they did only go up 4 to 6% this year), but when a parcel DID go missing the odd time, the insurance claim process was painless and I had the money in two weeks.
American sellers have to, have to, have to realize that their stupid couriers are only welcome in their own country. They should also realize that WE are paying the shipping, so stop whining about costs, blah, blah. Shipping to the UK or AU will not kill you, unless you ARE on the DHS watchlist.
As for shipping from China, have them send it "Air, Land and Sea" (that's what China Post calls it). It's really cheap and my parcels from Shenzhen arrive in 4-6 days!!
As for small businesses, it really hurts us. Large and mid sized businesses have contracts with shippers. Shippers won't give us little guys the time of day and treat us as a nuisance.
/end rant
The loss of surface Parcel Post is a cruel one. Yes, it was slow, but it was cheap. I've used it since the 70s.
Recently I wanted to send small gift to a buddy in the UK, but with the loss of the economy rate, it would be $22 for a small package. Ouch!
Here in Hawaii USPS is very important to us. FedEx and UPS way overpriced.
The new international flat rare box is welcome, tho - for small stuff.
Recently I wanted to send small gift to a buddy in the UK, but with the loss of the economy rate, it would be $22 for a small package. Ouch!
Here in Hawaii USPS is very important to us. FedEx and UPS way overpriced.
The new international flat rare box is welcome, tho - for small stuff.
I heard somewhere brokerage is included in ups and fedex airmail?
I just love it when they open your shipment, pick through it, break it, then charge $40 brokerage. Some day i am going to ship a few charged 20KV capacitors into the states and when they pick at them their fingers will explode like lightning hitting a tree trunk.
I ordered 30000ft of magnet wire a half a year ago, they managed to snap the spool in half and ruin all the wire. I had insurance on it... still waiting for the $300 back...
This is why i use a variac fed microwave oven transformer
Edit: I just remembered i have to get a few hundred pounds of transformer laminations from the states, they will break them somehow i see it coming. I was also going to get a hp lcz off ebay but i am scared now.
I just love it when they open your shipment, pick through it, break it, then charge $40 brokerage. Some day i am going to ship a few charged 20KV capacitors into the states and when they pick at them their fingers will explode like lightning hitting a tree trunk.
I ordered 30000ft of magnet wire a half a year ago, they managed to snap the spool in half and ruin all the wire. I had insurance on it... still waiting for the $300 back...
This is why i use a variac fed microwave oven transformer
Edit: I just remembered i have to get a few hundred pounds of transformer laminations from the states, they will break them somehow i see it coming. I was also going to get a hp lcz off ebay but i am scared now.
Unfortunately I think the problem is mostly with Canadian Customs, I've never had an instance of U.S. customs opening a package from Canada. Stuff from Canada gets here quickly and with little issue in my somewhat limited experience, going the other way is often far more of a problem, my previously mentioned caveat applies.
UPS treats everything they ship the same: DREADFULLY! You must pack it to survive a minimum drop of 6FT. (~2M) Packing to survive falling out of the open back of a UPS truck moving at 45mph during delivery might be advisable. No, unfortunately, I'm not kidding..
UPS treats everything they ship the same: DREADFULLY! You must pack it to survive a minimum drop of 6FT. (~2M) Packing to survive falling out of the open back of a UPS truck moving at 45mph during delivery might be advisable. No, unfortunately, I'm not kidding..
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