View Full Version : Tri kill and SP0 Backpack Sprayer Help

06-19-2004, 09:30 PM
Does this make sense?

I calibrated my SP0 BackPack Sprayer with 5 Gallons of Water and covered 1800 Square Meters.

1800 Square Meters is .45 acres

Tri Kill is rated at 5.5 litres per Hectare for non Bent Grass.
(60ml/100 Square Meters)

1800 Square Meters = 0.18 Hectare

0.18 Hectare Times 5.5 litres = 0.99 Litres.

So 1 litre of Tri Kill per 5 Gallon Tank?

Sounds High to me. Did I calibrate/calculate wrong?

60ml times 18 = 1 litre roughly.


06-19-2004, 09:54 PM
I don't know .

But anyway, have you ever had any problems with your SPs
My friend's SPO stopped in 2 months and his SP leaked in 3 days of use .

06-19-2004, 10:28 PM
None yet Bill. My supplier has all kinds of replacement parts/tips for it. There are repair kits available too.

The SP0 has an agitator built in, every pump by hand agitates the tank for you.

One thing I did read and do in the manual was that you had to tigten all connections after purchase and before first use. The connections are left loose so the rubber seals won't deform on the shelf before buying. Also lubricate all rubber seals regularly.

06-20-2004, 12:23 AM
1800 square meters!!! Are you running behind that thing or what lol I've got my math at 350 sm for 15 L. I think that something is wrong with your calibrations. That would mean that you could spray 1.8 km in a 1 meter path before filling up again. Why are you switching back and forth between metric and imperial? I'm pretty sure that the sprayer holds only 15 L, that would be around 4 gallons would it not? Also, on my label, from this year, it states 55 ml/ 100 sm.

I use the spo and tri kill regularly. I calibrated mine when I first got it and wrote it down on a piece of paper so that I only have to check it and go. I use 210 ml/tank. I think that if you were to put in 1 litre of tri kill in your sprayer that you would kill the grass as well as the weeds.

Also, a super time saver is the 3 nozzle boom for the sprayer. I use .2 gallon per minute nozzles for the tri kill. Works awesome!

I have 2 spo and 1 sp1. The spo are by far the better sprayers. I have special horsetail mix in the sp1 because it doesnt need any agitating. Not that tri kill does but the higher pressures are easier to work with when using the boom. I use the other spo for r-up/princep mix for gardens and cement cracks.

I hope some of this makes sense.

06-20-2004, 12:56 AM
Your right BCSteel It is 15L or 4 Gallon, that was a typo.

I will recalibrate in the next few days.

210ml per tank sounds alot more reasonable

Are you using fan or Flood nozzles on the boom?


06-20-2004, 01:01 AM
also do you has a timing trick to use pumping, 25 pumps after you fill the tank and one pump every 4 seconds to keep ideal pressure?

06-20-2004, 01:44 AM
I use 110 degree fan nozzles because I find that I get better coverage than with the 80 degree ones.

I use my walking pace as my gauge, 2 steps one pump. There is no way that I could count to 4 all day long... boooorrrriiinnngggg!!!

06-20-2004, 02:10 AM
I have 2 SP3s and one SP1 with 180 psi .

How long have y'all used them before they needed repair .

06-20-2004, 11:18 AM
I've had my sp1 for 7 years and its still going strong. Never had a problem with it.My spo's are 5 years old and same with them, no problems.

06-21-2004, 05:35 PM
Bump, because there are 3 threads on this going already.