www.sisweb.com/catalog/08/E42
New Objective Electrospray Tips
E42
Scientific Instrument Services, Inc.
TM
Phone: 908-788-5550
W
ide-bore and narrow-bore PicotipsTM
can be nested to create versatile,
ultra-low volume ESI emitters. Here, a
30 µm tip fabricated from 360 µm OD tubing has
been inserted into a 15 µm tip made from 450 µm
ID (670 OD) fused silica tubing.
Patented Multi-layer Conductive Coatings
New Objective uses a patented (U.S. Patent 5,788,166), multi-layer coating process. Our pure gold layer is overcoated with an inert, electrochemical-
ly stable dieletric layer, locking the gold into place. The resulting coating has excellent resistance to ESI solvent exposure and exceptional electrochemical
stability. To try and improve coating performance, other manufacturers increase the mechanical durability of the gold layer by introducing alloy or inter-layer
metals. During handling the coating may appear to be more durable, but it may not yield improved ESI performance. These alloy and inter-layer metals can
actually reduce the coating's electrochemical stability resulting in coating degradation at the tip.
Stability With Stop/Start Performance
The figure on the left shows the stability of signal at three time scales. The mod-
ulation in current is due to turning the spray voltage on and off. Note how the ion
current returns to its former level. This tip was sprayed without failure for over 3
hours and was "retired" still functional. The total ion current is (through 3 RF-only
quadrupoles) from a 360, 50 (ID/OD) needle with a 5 µm ID tip, operating at 60
nL/min spraying 20 µM Ubiquitin in 2% HoAC.
Select the right tip for your mass spectrometer
For optimal results - and without the need of additional equipment - some mass spectrometers require a specific size emitter. The most
common systems and their respective emitters are:
A Variety of Tips to Suit Your Application
Ask us about custom orders!
Part #
Description
Assortment of coated tips fabricated
from 1.0 mm OD tubing. Suitable for
use in Micromass instruments.
Includes:
Tubing Size
Tip Size
Quantity
(OD/ID mm)
(µm)
Econo10
1.0/0.58
1
5 tips
BG10-58-2-CE
1.0/0.58
2
5 tips
BG10-78-4-CE
1.0/0.78
4
5 tips
Part #
Description
Assortment of coated tips fabricated
from 1.2 mm OD tubing. Suitable for
use in Protana, PE Biosystems,
Brucker and others.
Includes:
Tubing Size
Tip Size
Quantity
(OD/ID mm)
(µm)
Econo12
1.2/0.69
1
5 tips
BG12-69-2-CE
1.2/0.69
2
5 tips
BG12-94-4-CE
1.2/0.94
4
5 tips
Glass Pico Tip Standard Dimensions:
1.0 mm OD Tubing: ca. 5 cm long, coating length 3.5 to 4 cm.
1.0 mm Tips are compatible with Micromass Systems
1.2 &1.5 OD Tubing: ca. 5 cm long, coating length 1.5 to 2 cm
1.2 mm Tips are compatible with Protana (PAC),Bruker, &
PE BioSystems
Fused Silica Pico Tip Standard Dimensions:
Tip-end coating:
Tip length: ca. 5 cm long, coating length 1.5 to 2 cm.
Distal-end coating:
Tip length: ca. 5 cm long, coating length 3 to 3.5 cm
from distal end.
PicoTip
TM
Introduction Kits
A
t New Objective we realize that choosing the best emitter for low-flow rate ESI can be very confusing. To help you determine
which tip is best for a given application we have put together a number of kits, each with a variety of tip sizes to make your
decisions easier.
Glass Tip Assortments
Choose a Tip with a Tubing O.D. of 1.2 mm for:
ABI MarinerTM/QSTAR®
Bruker NanosprayTM
Protana NanoES Source
Thermo Finnigan Nanospray Ion Source
Choose a Tip with a Tubing O.D. of 1mm for:
Micromass® ZSprayTM NanoFlowTM
tip...
