INCHES, CENTIMETRES, MILLMETRES, MESH AND MICRONS.

INCHES, CENTIMETRES, MILLMETRES, MESH AND MICRONS.

The average brown human hair is 70 micron. Judging by the number of farmers who confuse mesh sizes with microns I thought it best to shed some light on the matter.

I think if you were to ask most people to show you an inch using their thumb and forefinger they would have a pretty good idea. I'm not too sure about 25 mm!

1" = 25.4 mm or 2.54 cm. 1mm = 1'000 micron.

MESH size refers to the number of openings in a linear inch of mesh. You have to consider the thickness of the wire used in the mesh. There is a difference between commercial or market grade and mill grade but that is not important at this stage. Using the US standard mesh size, here are the common mesh sizes and their micron and mm equivalents.

MESH - No. of openings	MILLIMETRES	MICRONS
16 GREY	1.180	1180
30 YELLOW	0.595	595
50  RED	0.300	300
80  BLUE	0.177	177
100 GREEN	0.149	149
120 BROWN	0.125	125
200 ORANGE	0.074	74

When looking under the nozzle section in the catalogue note that the appropriate filter mesh size in specified in parenthesis under each nozzle-tip. If not specified then no filter is required. 

DO NOT USE A FILTER WITH A FINER MESH SIZE OTHER THAN THAT SPECIFIED AS IT WILL BLOCK UP AND DRASTICALLY REDUCE THE FLOW RATE.

When using Disc and Core spray-tips use the correct SLOTTED FILTER.

chemicon@multispray.com

Tel Intl: +27 83 289 0327

Tel Natl:  083 289 0327

AIR INDUCTION HOLLOW CONE NOZZLE-TIPS AND THE DISC AND CORE.

AN INITIAL LOOK  AT  AIR INDUCTION HOLLOW CONE NOZZLE-TIPS AND THE DISC AND CORE.

Just showing the arrangement of the air induction spray-tip set up for a light cover application.

Air induction tips at 15 bar.

Current setup using the standard disc and cores also at 15 bar. Each farmer has his own theory and specific disc and core combinations.

Besides worn nozzles just imagine if it is possible to reduce the total volume sprayed in a season by say 20%. When you are going through 20'000'000 litres per season and you can reduce that to 16'000'000 litres ...... THAT'S ONE MASSIVE SAVING. LESS PRODUCT, LESS WEAR ON PUMPS AND EQUIPMENT AND LESS DIESEL.

These mist blowers are essentially used for light to medium cover sprays. No comment at this stage as I'm tweaking the volumes and getting a feel for the coverage. Once it is set up I'll test the distribution with water sensitive paper. The season is at an end and the only spraying is for false codling moth. Until next time check the pressure guages, regulators and in-line filters.

TEL INTL:  +2783 289 0327

TEL NATL:  083 289 0327

chemicon@multispray.com

KEEP AN EYE ON THIS PIC!!  

I'll comment on the that nozzle on the top in future.  START QUEUEING.