LP-C18
- Not endcapped, prevents siloxane bond from hydrolysis at low pH
- Compatible with 100% water as the mobile phase, more polar than “AQ”, better peak shape and resolution
- Best peak shape for polar compounds
- Exceptional lifetime at low pH (0.5-8.0) and high temperature
LP phases are designed for use at low pH conditions and consists of two very bulky hydrophobic protective groups to prevent the siloxane bond from hydrolysis at low pH conditions. So Ultisil LP is extremely stable in very low pH mobile phase and at high temperature, even at the lowest pH of 1.0, making it the most stable phase for low pH applications in the market. Because it is not endcapped and has more surface silanols, LP phase has more retention for some early eluted polar compounds, and provides different selectivities. Ultisil LP-C18 is the most polar C18 phase among all the C18 products of Welch.
| Columns | USP | pH range | Carbon Loading(%) | Surface Area(m2/g) | Endcapped |
| Ultisil LP-C18 | L1 | 0.5-8.0 | 10(120Å), 5(3000Å) | 320(120Å), 90(300Å) | No |
All Products for LP-C18
Particle Size
| 3µm | 3.5µm | 5µm |
| 10µm |
Length
| 30mm | 33mm | 50mm |
| 75mm | 100mm | 125mm |
| 150mm | 200mm | 250mm |
| 300mm |
Column ID
| 2.1mm | 3mm | 4mm |
| 3.9mm | 4.6mm | 6mm |
| 6.5mm | 7.8mm |
Pore Size
| 120Å | 300Å |
| Part Number | Part Name | Particle Size | Length | Column ID | Pore Size | Qty |
|---|---|---|---|---|---|---|
| H00208-21009 | Ultisil LP-C18, 3µm, 120Å, 30 x 2.1mm HPLC Column | 3µm | 30mm | 2.1mm | 120Å | |
| H09208-21009 | Ultisil LP-C18, 3µm, 120Å, 33 x 2.1mm HPLC Column | 3µm | 33mm | 2.1mm | 120Å | |
| H00208-21010 | Ultisil LP-C18, 3µm, 120Å, 50 x 2.1mm HPLC Column | 3µm | 50mm | 2.1mm | 120Å | |
| H00208-21011 | Ultisil LP-C18, 3µm, 120Å, 75 x 2.1mm HPLC Column | 3µm | 75mm | 2.1mm | 120Å | |
| H00208-21012 | Ultisil LP-C18, 3µm, 120Å, 100 x 2.1mm HPLC Column | 3µm | 100mm | 2.1mm | 120Å | |
| H00208-21013 | Ultisil LP-C18, 3µm, 120Å, 125 x 2.1mm HPLC Column | 3µm | 125mm | 2.1mm | 120Å | |
| H00208-21014 | Ultisil LP-C18, 3µm, 120Å, 150 x 2.1mm HPLC Column | 3µm | 150mm | 2.1mm | 120Å | |
| H00208-21015 | Ultisil LP-C18, 3µm, 120Å, 200 x 2.1mm HPLC Column | 3µm | 200mm | 2.1mm | 120Å | |
| H00208-21016 | Ultisil LP-C18, 3µm, 120Å, 250 x 2.1mm HPLC Column | 3µm | 250mm | 2.1mm | 120Å | |
| H00208-21018 | Ultisil LP-C18, 3µm, 120Å, 30 x 3mm HPLC Column | 3µm | 30mm | 3mm | 120Å | |
| H00208-21019 | Ultisil LP-C18, 3µm, 120Å, 50 x 3mm HPLC Column | 3µm | 50mm | 3mm | 120Å | |
| H00208-21020 | Ultisil LP-C18, 3µm, 120Å, 75 x 3mm HPLC Column | 3µm | 75mm | 3mm | 120Å | |
| H00208-21021 | Ultisil LP-C18, 3µm, 120Å, 100 x 3mm HPLC Column | 3µm | 100mm | 3mm | 120Å | |
| H00208-21022 | Ultisil LP-C18, 3µm, 120Å, 125 x 3mm HPLC Column | 3µm | 125mm | 3mm | 120Å | |
| H00208-21023 | Ultisil LP-C18, 3µm, 120Å, 150 x 3mm HPLC Column | 3µm | 150mm | 3mm | 120Å | |
| H00208-21024 | Ultisil LP-C18, 3µm, 120Å, 200 x 3mm HPLC Column | 3µm | 200mm | 3mm | 120Å | |
| H00208-21025 | Ultisil LP-C18, 3µm, 120Å, 250 x 3mm HPLC Column | 3µm | 250mm | 3mm | 120Å | |
| H00208-21027 | Ultisil LP-C18, 3µm, 120Å, 30 x 4mm HPLC Column | 3µm | 30mm | 4mm | 120Å | |
| H00208-21028 | Ultisil LP-C18, 3µm, 120Å, 50 x 4mm HPLC Column | 3µm | 50mm | 4mm | 120Å | |
| H00208-21029 | Ultisil LP-C18, 3µm, 120Å, 75 x 4mm HPLC Column | 3µm | 75mm | 4mm | 120Å | |
| H00208-21030 | Ultisil LP-C18, 3µm, 120Å, 100 x 4mm HPLC Column | 3µm | 100mm | 4mm | 120Å | |
| H00208-21031 | Ultisil LP-C18, 3µm, 120Å, 125 x 4mm HPLC Column | 3µm | 125mm | 4mm | 120Å | |
| H00208-21064 | Ultisil LP-C18, 3µm, 120Å, 150 x 3.9mm HPLC Column | 3µm | 150mm | 3.9mm | 120Å | |
| H00208-21032 | Ultisil LP-C18, 3µm, 120Å, 150 x 4mm HPLC Column | 3µm | 150mm | 4mm | 120Å | |
| H00208-21033 | Ultisil LP-C18, 3µm, 120Å, 200 x 4mm HPLC Column | 3µm | 200mm | 4mm | 120Å | |
| H00208-21066 | Ultisil LP-C18, 3µm, 120Å, 250 x 3.9mm HPLC Column | 3µm | 250mm | 3.9mm | 120Å | |
| H00208-21034 | Ultisil LP-C18, 3µm, 120Å, 250 x 4mm HPLC Column | 3µm | 250mm | 4mm | 120Å | |
| H00208-21036 | Ultisil LP-C18, 3µm, 120Å, 30 x 4.6mm HPLC Column | 3µm | 30mm | 4.6mm | 120Å | |
| H11208-21036 | Ultisil LP-C18, 3µm, 120Å, 33 x 4.6mm HPLC Column | 3µm | 33mm | 4.6mm | 120Å | |
| H00208-21037 | Ultisil LP-C18, 3µm, 120Å, 50 x 4.6mm HPLC Column | 3µm | 50mm | 4.6mm | 120Å | |
| H00208-21038 | Ultisil LP-C18, 3µm, 120Å, 75 x 4.6mm HPLC Column | 3µm | 75mm | 4.6mm | 120Å | |
| H00208-21039 | Ultisil LP-C18, 3µm, 120Å, 100 x 4.6mm HPLC Column | 3µm | 100mm | 4.6mm | 120Å | |
| H00208-21040 | Ultisil LP-C18, 3µm, 120Å, 125 x 4.6mm HPLC Column | 3µm | 125mm | 4.6mm | 120Å | |
| H00208-21041 | Ultisil LP-C18, 3µm, 120Å, 150 x 4.6mm HPLC Column | 3µm | 150mm | 4.6mm | 120Å | |
| H00208-21042 | Ultisil LP-C18, 3µm, 120Å, 200 x 4.6mm HPLC Column | 3µm | 200mm | 4.6mm | 120Å | |
| H00208-21043 | Ultisil LP-C18, 3µm, 120Å, 250 x 4.6mm HPLC Column | 3µm | 250mm | 4.6mm | 120Å | |
| H00208-20010 | Ultisil LP-C18, 3.5µm, 120Å, 50 x 2.1mm HPLC Column | 3.5µm | 50mm | 2.1mm | 120Å | |
| H00208-20012 | Ultisil LP-C18, 3.5µm, 120Å, 100 x 2.1mm HPLC Column | 3.5µm | 100mm | 2.1mm | 120Å | |
| H00208-20014 | Ultisil LP-C18, 3.5µm, 120Å, 150 x 2.1mm HPLC Column | 3.5µm | 150mm | 2.1mm | 120Å | |
| H00208-20023 | Ultisil LP-C18, 3.5µm, 120Å, 150 x 3mm HPLC Column | 3.5µm | 150mm | 3mm | 120Å | |
| H00208-20037 | Ultisil LP-C18, 3.5µm, 120Å, 50 x 4.6mm HPLC Column | 3.5µm | 50mm | 4.6mm | 120Å | |
| H00208-20039 | Ultisil LP-C18, 3.5µm, 120Å, 100 x 4.6mm HPLC Column | 3.5µm | 100mm | 4.6mm | 120Å | |
| H00208-20041 | Ultisil LP-C18, 3.5µm, 120Å, 150 x 4.6mm HPLC Column | 3.5µm | 150mm | 4.6mm | 120Å | |
| H00208-20043 | Ultisil LP-C18, 3.5µm, 120Å, 250 x 4.6mm HPLC Column | 3.5µm | 250mm | 4.6mm | 120Å | |
| H00208-31009 | Ultisil LP-C18, 5µm, 120Å, 30 x 2.1mm HPLC Column | 5µm | 30mm | 2.1mm | 120Å | |
| H09208-31009 | Ultisil LP-C18, 5µm, 120Å, 33 x 2.1mm HPLC Column | 5µm | 33mm | 2.1mm | 120Å | |
| H00208-31010 | Ultisil LP-C18, 5µm, 120Å, 50 x 2.1mm HPLC Column | 5µm | 50mm | 2.1mm | 120Å | |
| H00208-31011 | Ultisil LP-C18, 5µm, 120Å, 75 x 2.1mm HPLC Column | 5µm | 75mm | 2.1mm | 120Å | |
| H00208-31012 | Ultisil LP-C18, 5µm, 120Å, 100 x 2.1mm HPLC Column | 5µm | 100mm | 2.1mm | 120Å | |
| H00208-31013 | Ultisil LP-C18, 5µm, 120Å, 125 x 2.1mm HPLC Column | 5µm | 125mm | 2.1mm | 120Å | |
| H00208-31014 | Ultisil LP-C18, 5µm, 120Å, 150 x 2.1mm HPLC Column | 5µm | 150mm | 2.1mm | 120Å | |
| H00208-31015 | Ultisil LP-C18, 5µm, 120Å, 200 x 2.1mm HPLC Column | 5µm | 200mm | 2.1mm | 120Å | |
| H00208-31016 | Ultisil LP-C18, 5µm, 120Å, 250 x 2.1mm HPLC Column | 5µm | 250mm | 2.1mm | 120Å | |
| H00208-31018 | Ultisil LP-C18, 5µm, 120Å, 30 x 3mm HPLC Column | 5µm | 30mm | 3mm | 120Å | |
| H00208-31019 | Ultisil LP-C18, 5µm, 120Å, 50 x 3mm HPLC Column | 5µm | 50mm | 3mm | 120Å | |
| H00208-31020 | Ultisil LP-C18, 5µm, 120Å, 75 x 3mm HPLC Column | 5µm | 75mm | 3mm | 120Å | |
| H00208-31021 | Ultisil LP-C18, 5µm, 120Å, 100 x 3mm HPLC Column | 5µm | 100mm | 3mm | 120Å | |
| H00208-31022 | Ultisil LP-C18, 5µm, 120Å, 125 x 3mm HPLC Column | 5µm | 125mm | 3mm | 120Å | |
| H00208-31023 | Ultisil LP-C18, 5µm, 120Å, 150 x 3mm HPLC Column | 5µm | 150mm | 3mm | 120Å | |
| H00208-31024 | Ultisil LP-C18, 5µm, 120Å, 200 x 3mm HPLC Column | 5µm | 200mm | 3mm | 120Å | |
| H00208-31025 | Ultisil LP-C18, 5µm, 120Å, 250 x 3mm HPLC Column | 5µm | 250mm | 3mm | 120Å | |
| H00208-31027 | Ultisil LP-C18, 5µm, 120Å, 30 x 4mm HPLC Column | 5µm | 30mm | 4mm | 120Å | |
| H00208-31028 | Ultisil LP-C18, 5µm, 120Å, 50 x 4mm HPLC Column | 5µm | 50mm | 4mm | 120Å | |
| H00208-31029 | Ultisil LP-C18, 5µm, 120Å, 75 x 4mm HPLC Column | 5µm | 75mm | 4mm | 120Å | |
| H00208-31030 | Ultisil LP-C18, 5µm, 120Å, 100 x 4mm HPLC Column | 5µm | 100mm | 4mm | 120Å | |
| H00208-31031 | Ultisil LP-C18, 5µm, 120Å, 125 x 4mm HPLC Column | 5µm | 125mm | 4mm | 120Å | |
| H00208-31064 | Ultisil LP-C18, 5µm, 120Å, 150 x 3.9mm HPLC Column | 5µm | 150mm | 3.9mm | 120Å | |
| H00208-31032 | Ultisil LP-C18, 5µm, 120Å, 150 x 4mm HPLC Column | 5µm | 150mm | 4mm | 120Å | |
| H00208-31033 | Ultisil LP-C18, 5µm, 120Å, 200 x 4mm HPLC Column | 5µm | 200mm | 4mm | 120Å | |
| H00208-31066 | Ultisil LP-C18, 5µm, 120Å, 250 x 3.9mm HPLC Column | 5µm | 250mm | 3.9mm | 120Å | |
| H00208-31034 | Ultisil LP-C18, 5µm, 120Å, 250 x 4mm HPLC Column | 5µm | 250mm | 4mm | 120Å | |
| H00208-31067 | Ultisil LP-C18, 5µm, 120Å, 300 x 3.9mm HPLC Column | 5µm | 300mm | 3.9mm | 120Å | |
| H00208-31035 | Ultisil LP-C18, 5µm, 120Å, 300 x 4mm HPLC Column | 5µm | 300mm | 4mm | 120Å | |
| H00208-31036 | Ultisil LP-C18, 5µm, 120Å, 30 x 4.6mm HPLC Column | 5µm | 30mm | 4.6mm | 120Å | |
| H11208-31036 | Ultisil LP-C18, 5µm, 120Å, 33 x 4.6mm HPLC Column | 5µm | 33mm | 4.6mm | 120Å | |
| H00208-31037 | Ultisil LP-C18, 5µm, 120Å, 50 x 4.6mm HPLC Column | 5µm | 50mm | 4.6mm | 120Å | |
| H00208-31038 | Ultisil LP-C18, 5µm, 120Å, 75 x 4.6mm HPLC Column | 5µm | 75mm | 4.6mm | 120Å | |
| H00208-31039 | Ultisil LP-C18, 5µm, 120Å, 100 x 4.6mm HPLC Column | 5µm | 100mm | 4.6mm | 120Å | |
| H00208-31040 | Ultisil LP-C18, 5µm, 120Å, 125 x 4.6mm HPLC Column | 5µm | 125mm | 4.6mm | 120Å | |
| H00208-31041 | Ultisil LP-C18, 5µm, 120Å, 150 x 4.6mm HPLC Column | 5µm | 150mm | 4.6mm | 120Å | |
| H00208-31042 | Ultisil LP-C18, 5µm, 120Å, 200 x 4.6mm HPLC Column | 5µm | 200mm | 4.6mm | 120Å | |
| H00208-31043 | Ultisil LP-C18, 5µm, 120Å, 250 x 4.6mm HPLC Column | 5µm | 250mm | 4.6mm | 120Å | |
| H00208-31044 | Ultisil LP-C18, 5µm, 120Å, 300 x 4.6mm HPLC Column | 5µm | 300mm | 4.6mm | 120Å | |
| H00208-31053 | Ultisil LP-C18, 5µm, 120Å, 150 x 6mm HPLC Column | 5µm | 150mm | 6mm | 120Å | |
| H00208-31054 | Ultisil LP-C18, 5µm, 120Å, 250 x 6mm HPLC Column | 5µm | 250mm | 6mm | 120Å | |
| H00208-31045 | Ultisil LP-C18, 5µm, 120Å, 150 x 6.5mm HPLC Column | 5µm | 150mm | 6.5mm | 120Å | |
| H00208-31046 | Ultisil LP-C18, 5µm, 120Å, 250 x 6.5mm HPLC Column | 5µm | 250mm | 6.5mm | 120Å | |
| H00208-31049 | Ultisil LP-C18, 5µm, 120Å, 100 x 7.8mm HPLC Column | 5µm | 100mm | 7.8mm | 120Å | |
| H00208-31050 | Ultisil LP-C18, 5µm, 120Å, 150 x 7.8mm HPLC Column | 5µm | 150mm | 7.8mm | 120Å | |
| H00208-31051 | Ultisil LP-C18, 5µm, 120Å, 250 x 7.8mm HPLC Column | 5µm | 250mm | 7.8mm | 120Å | |
| H00208-33041 | Ultisil LP-C18, 5µm, 300Å, 150 x 4.6mm HPLC Column | 5µm | 150mm | 4.6mm | 300Å | |
| H00208-33034 | Ultisil LP-C18, 5µm, 300Å, 250 x 4mm HPLC Column | 5µm | 250mm | 4mm | 300Å | |
| H00208-33043 | Ultisil LP-C18, 5µm, 300Å, 250 x 4.6mm HPLC Column | 5µm | 250mm | 4.6mm | 300Å | |
| H00208-41064 | Ultisil LP-C18, 10µm, 120Å, 150 x 3.9mm HPLC Column | 10µm | 150mm | 3.9mm | 120Å | |
| H00208-41067 | Ultisil LP-C18, 10µm, 120Å, 300 x 3.9mm HPLC Column | 10µm | 300mm | 3.9mm | 120Å | |
| H00208-41035 | Ultisil LP-C18, 10µm, 120Å, 300 x 4mm HPLC Column | 10µm | 300mm | 4mm | 120Å | |
| H00208-41043 | Ultisil LP-C18, 10µm, 120Å, 250 x 4.6mm HPLC Column | 10µm | 250mm | 4.6mm | 120Å | |
| H00208-41044 | Ultisil LP-C18, 10µm, 120Å, 300 x 4.6mm HPLC Column | 10µm | 300mm | 4.6mm | 120Å |
